Quick answer

Yes—but only in limited circumstances, and timing is critical.

In a Philippine criminal case, new defense evidence may support:

Reopening the proceedings before the conviction becomes final, when necessary to prevent a miscarriage of justice;
A motion for new trial based on genuinely newly discovered and material evidence; or
Post-conviction DNA testing and appropriate relief when favorable DNA results undermine the conviction.

Evidence is not “newly discovered” merely because the defense obtained it late, overlooked it, changed lawyers, or decided only later to use it. The defense generally must show that the evidence was discovered after trial, could not have been found and presented earlier despite reasonable diligence, is material rather than merely repetitive or impeaching, and would probably change the judgment.

Once a conviction is final and executory, ordinary reopening or a Rule 121 motion for new trial is generally no longer available. Post-conviction DNA relief is an important exception, while other attacks on a final judgment are confined to extraordinary remedies with different and demanding requirements.

“Reopening” and a “new trial” are different remedies

Although the terms are often used interchangeably in everyday conversation, they refer to different procedural remedies.

Reopening the criminal proceedings

Under Section 24, Rule 119 of the Rules of Criminal Procedure, the trial judge may reopen proceedings, either on the judge’s initiative or upon a party’s motion, to avoid a miscarriage of justice. The requirements include:

The judgment of conviction has not yet become final;
The court conducts a hearing;
Reopening is necessary to avoid a miscarriage of justice; and
The reopened proceedings are completed within 30 days from the order granting reopening.

Reopening can be requested after the parties have closed their evidence and even after conviction has been promulgated, provided the conviction has not yet become final. It is discretionary: presenting another document or witness does not automatically entitle the accused to reopen the case.

The Supreme Court has explained these requirements in cases such as Rivac v. People and Cabarles v. Maceda.

Motion for new trial

Under Rule 121, a trial court may grant the accused a new trial before the judgment of conviction becomes final. One recognized ground is the discovery of new and material evidence that:

The accused could not, with reasonable diligence, have discovered and produced during trial; and
Would probably change the judgment if admitted.

A new trial may also be based on errors of law or irregularities prejudicial to the substantial rights of the accused, but that is a separate ground. New evidence should not be forced into an argument about legal error when the proper request is a new trial based on newly discovered evidence.

What counts as newly discovered evidence?

Courts generally apply four requirements:

Discovery after trial. The evidence became known or available only after the trial.
Reasonable diligence. The accused and counsel could not have discovered and presented it earlier despite reasonable efforts.
Materiality. It directly matters to a disputed fact that could affect guilt, innocence, the offense proved, or another material issue.
Probable effect on the result. If admitted and considered with the existing record, it would probably change the judgment.

The Supreme Court applies these requirements strictly. See, for example, Saludaga v. Sandiganbayan and the Court’s discussion of Rule 121 in [People v. Dela

Quick answer

Yes—but only in limited circumstances, and timing is critical.

In a Philippine criminal case, genuinely new and material defense evidence may support:

reopening the proceedings to prevent a miscarriage of justice;
a motion for new trial based on newly discovered evidence;
a request during an appeal for a new trial; or
in qualifying cases, post-conviction DNA testing and relief based on favorable results.

Ordinarily, these remedies must be used before the conviction becomes final. Once judgment is final and executory, a trial court generally cannot reopen the case merely because another witness, document, video, or theory has appeared. Post-conviction DNA relief is an important exception, while challenges based on a void judgment or a fundamental denial of constitutional rights involve different—and exceptionally narrow—remedies.

The evidence must be more than helpful or recently obtained. The defense normally must show that it was discovered after trial, could not have been found and presented earlier despite reasonable diligence, is material rather than merely cumulative or impeaching, and would probably change the result.

“New evidence” is not always “newly discovered evidence”

Courts distinguish between evidence that is genuinely newly discovered and evidence that was merely not presented.

Under Rule 121 of the Rules of Criminal Procedure, the usual requirements are:

The evidence was discovered after trial.
The defense could not, despite reasonable diligence, have discovered and produced it during trial.
The evidence is material and not merely cumulative, corroborative, or intended only to impeach a witness.
The evidence is strong enough that its presentation would probably change the judgment.

These requirements are applied together. Failure to satisfy any one may defeat the motion.

For example, a document already in the accused’s possession during trial will not ordinarily become “newly discovered” simply because former counsel overlooked it. The same is generally true of a witness whom the accused already knew about but chose not to call. A later change in litigation strategy is not newly discovered evidence.

By contrast, evidence may qualify when its existence or significance could not reasonably have been known earlier—such as a previously unavailable independent record, a witness discovered only through facts learned after trial, or forensic evidence produced through a method that meets the governing legal requirements.

The Supreme Court’s decisions in Tumang v. Court of Appeals and Saludaga v. Sandiganbayan explain the distinction and the requirements for newly discovered evidence.

Reopening before the conviction becomes final

Reopening under Rule 119

Section 24, Rule 119 allows the judge, either on the court’s own initiative or upon motion, to reopen criminal proceedings before the judgment of conviction becomes final. A hearing is required, and reopening must be necessary to avoid a miscarriage of justice.

The additional proceedings must be completed within 30 days from the order granting reopening.

This remedy can be available after the parties have rested and even after a conviction has been promulgated, provided the conviction has not yet become final. It is discretionary: submitting new evidence does not create an automatic right to reopen the case.

The Supreme Court identifies five requirements:

the conviction is not yet final;
the judge acts on the court’s initiative or on a motion;
a hearing is conducted;
reopening is intended to prevent a miscarriage of justice; and
the further proceedings are completed within 30 days from the order.

See Rivac v. People and Cabarles v. Maceda.

New trial under Rule 121

At any time before a judgment of conviction becomes final, the court may grant a new trial on the accused’s motion or, with the accused’s consent, on its own initiative.

Newly discovered evidence is one express ground. Rule 121 also recognizes errors of law or irregularities committed during trial that prejudiced the accused’s substantial rights, although that is a different ground and should not be confused with new evidence.

A motion based on newly discovered evidence must:

be in writing;
state the specific grounds;
give notice to the prosecutor; and
be supported by affidavits from the proposed witnesses or authenticated copies of the documents to be introduced.

If affidavits cannot reasonably be obtained, the motion should explain why and identify other competent proof supporting the request. The court may receive evidence on the motion.

When a new trial is granted solely because of newly discovered evidence, the evidence already received ordinarily remains part of the record. The court receives the new evidence, allows the prosecution to present rebuttal evidence, and then renders a new judgment.

The governing provisions appear in Rules 119 and 121 of the Rules of Criminal Procedure.

Do not wait for the ordinary appeal period to expire

A criminal appeal generally must be taken within 15 days from promulgation of the judgment or notice of the final order being appealed. A timely motion for new trial or reconsideration interrupts that period, after which the remaining or applicable appeal period is determined under the procedural rules and controlling decisions.

Finality can also be affected by waiver of appeal, an application for probation, service of the sentence, or escape. Because the exact date depends on the record, counsel should immediately obtain:

the judgment and date of promulgation;
proof of when the accused and counsel received relevant orders;
the docket entries;
any motion already filed and the order resolving it; and
any notice of appeal, waiver, probation application, or entry of judgment.

Do not assume that informal discussions with court staff, a letter to the judge, or efforts to obtain an affidavit suspend a deadline. They ordinarily do not.

What if the case is already on appeal?

Newly discovered defense evidence should be raised promptly in the court that has authority over the case at that stage.

In a criminal appeal before the Court of Appeals, Rule 124 allows the appellate court, before judgment on the appeal becomes final, to order a new trial on the ground of newly discovered evidence that could not have been discovered through reasonable diligence and would probably change the result.

The correct filing depends on whether the records remain with the trial court, whether the appeal has been perfected, and whether the Court of Appeals or Supreme Court has already acted. Filing in the wrong court may waste the limited time before finality. Counsel should first verify the docket status and any entry of judgment.

What happens after a final conviction?

The general rule: final judgments cannot simply be reopened

Once a conviction has become final and executory, the court that rendered it generally loses authority to reopen the proceedings merely to receive ordinary new evidence. Final judgments are protected by the doctrine of immutability of judgment.

The Supreme Court has specifically held that Rule 119 reopening is unavailable after finality. See Anonymous Letter dated August 12, 2010.

A late affidavit, recantation, private investigation, or newly obtained document therefore does not by itself restore the trial court’s jurisdiction.

Post-conviction DNA testing

The Rule on DNA Evidence, A.M. No. 06-11-5-SC, provides a specific post-conviction mechanism.

Post-conviction DNA testing may be available without a prior court order when:

a biological sample exists;
the sample is relevant to the case; and
the testing would probably result in the reversal or modification of the conviction.

The condition, custody, identity, and integrity of the biological sample remain crucial. Testing must use reliable methods, and the resulting DNA evidence must still be properly presented and evaluated; obtaining a test does not automatically make every result admissible.

If the result is favorable, either the convict or the prosecution may file a motion for new trial or reconsideration in the court that rendered the conviction. After notice and hearing, the court may set aside or modify the judgment if the probative value of the DNA evidence requires it.

Anyone considering this remedy should act quickly to locate and preserve:

clothing, swabs, tissue, blood, hair, semen, bone, or other biological material;
laboratory records and specimen identifiers;
evidence-room or property receipts;
chain-of-custody documents;
prior test reports and raw data; and
information showing where and how the sample has been stored.

No one should privately remove, open, retest, or alter a government-held sample without lawful authority. An uncontrolled transfer may compromise the sample or its chain of custody.

Habeas corpus and attacks on void judgments

Habeas corpus is not a substitute for a missed appeal or an ordinary motion for new trial. It generally cannot be used simply to ask another court to reassess witness credibility or weigh new non-DNA evidence.

Different relief may be considered when continued detention rests on a void judgment, the convicting court lacked jurisdiction, or a fundamental constitutional violation rendered the proceedings legally invalid. These are fact-sensitive and exceptional questions. New evidence may help establish the underlying violation, but “new evidence” alone does not automatically create a habeas corpus case.

Recantations and changed testimony are treated cautiously

A recantation occurs when a witness withdraws or materially changes earlier testimony. Courts generally view recantations with suspicion because they can result from pressure, payment, intimidation, remorse, or a later personal dispute.

A recantation is usually insufficient when it merely contradicts sworn testimony already tested in court. The court will consider matters such as:

why the witness testified differently before;
when and how the recantation arose;
whether threats, inducements, or coaching were involved;
whether independent records support the new account;
whether the original testimony was corroborated; and
whether the change would probably affect the judgment.

The defense should not rely on a notarized affidavit alone. Where lawful and safe, counsel should preserve independent evidence of how the witness came forward and be prepared for the witness to testify and undergo cross-examination.

Never coach, pressure, pay, threaten, or offer a benefit in exchange for testimony. Possible witness tampering or falsification creates separate legal exposure and can destroy the credibility of otherwise useful evidence.

Evidence that is usually too weak by itself

Courts commonly reject a request when the alleged new evidence is:

already known or reasonably discoverable during trial;
another version of testimony already presented;
offered only to attack a witness’s general credibility;
cumulative of existing defense evidence;
hearsay without an applicable exception;
an unauthenticated screenshot, recording, or printout;
a private report whose author or method cannot be established;
speculative or unrelated to an element of the offense;
inconsistent with reliable physical or documentary evidence; or
unlikely to change the outcome even if admitted.

“Material” means that the evidence bears meaningfully on an issue the court had to decide. “Probably alter the result” requires more than showing that the evidence might have helped.

Digital evidence needs preservation and authentication

Messages, CCTV footage, photographs, call records, GPS data, emails, cloud files, and social-media content may be important, but a screenshot alone often leaves unanswered questions about origin, completeness, alteration, and context.

Preserve, where available:

the original device and file;
full message threads rather than selected screenshots;
metadata and original timestamps;
account identifiers and URLs;
export files supplied by the platform;
CCTV system details and native video files;
records identifying who extracted or copied the data;
a written log of every transfer or duplication; and
a forensic image or expert report obtained through lawful means.

Do not edit, crop, rename, compress, forward repeatedly, or overwrite the only copy. Keep a working copy separate from the preserved original.

Accessing another person’s account, device, or private communications without authority may itself be unlawful. Counsel can assess whether preservation requests, subpoenas, court orders, or other formal processes are needed.

Practical steps when new defense evidence appears

1. Determine the exact procedural stage

Ask immediately:

Has the defense rested?
Has judgment been promulgated?
Has a motion for reconsideration or new trial been filed?
Has an appeal been perfected?
Which court currently has jurisdiction?
Has an entry of judgment been issued?
Has the accused applied for probation, waived appeal, begun serving the sentence, or escaped?

The answer determines which remedy, if any, remains available.

2. Preserve the evidence without changing it

Secure originals, make documented forensic or archival copies when appropriate, and record who found the evidence, where it was found, and every person who handled it.

For a witness, record the date and circumstances in which the witness came forward. Let counsel arrange a properly prepared affidavit and assess safety concerns.

3. Establish why it could not have been found earlier

Prepare a clear timeline showing:

what the defense knew during trial;
what searches or inquiries were made;
why those efforts did not reveal the evidence;
when the evidence was actually discovered; and
what event led to its discovery.

General statements such as “we only found it now” are usually inadequate.

4. Connect the evidence to the judgment

Identify the precise finding it affects—for example, identity, alibi, intent, self-defense, chain of custody, authorship, location, or credibility of a decisive eyewitness.

Then explain why the new proof would probably change the result when considered with the existing record.

5. Prepare admissible support

Depending on the evidence, this may include:

a witness affidavit based on personal knowledge;
authenticated or certified records;
testimony from a records custodian;
an expert’s qualifications, methods, data, and report;
chain-of-custody evidence;
the original electronic file and testimony authenticating it; or
a lawful request for DNA testing and preservation.

6. File in the correct court immediately

A persuasive claim can still fail if filed after finality or in a court that no longer has authority over the case. Have counsel verify the docket and compute the deadline from the actual notices and orders.

Common mistakes

Calling evidence “newly discovered” without explaining reasonable diligence.
Waiting to complete a private investigation while the appeal period expires.
Filing a motion for reconsideration when the real request is to introduce new evidence.
Sending evidence directly to the judge instead of filing a proper motion with notice to the prosecution.
Submitting only an affidavit when the original record or object can be obtained.
Relying on a recantation without independent corroboration.
Editing a video, screenshot, audio file, or message thread.
Breaking the chain of custody of physical or biological evidence.
Assuming a favorable private DNA report automatically overturns a conviction.
Concealing unfavorable portions of the new material from defense counsel.
Contacting a vulnerable witness in a way that may be seen as coercive or intimidating.
Assuming that a final conviction can always be reopened “in the interest of justice.”

When legal help is urgent

Contact criminal appellate counsel or the Public Attorney’s Office immediately when:

judgment has just been promulgated;
fewer than 15 days may remain to appeal;
an appellate decision or resolution has been received;
an entry of judgment may already have issued;
biological evidence may be deteriorating or scheduled for disposal;
CCTV, telecommunications, or online-platform data may soon be overwritten;
a witness reports threats, pressure, or an attempt to buy testimony;
the accused is considering probation or signing a waiver of appeal;
prior counsel may have failed to present known evidence; or
the new material suggests that another person committed the offense.

Bring the complete case number, judgment, relevant orders, notices, transcripts if available, and the evidence in its original form. If the accused cannot afford private counsel, inquire promptly with the Public Attorney’s Office about eligibility and assistance.

Civil cases follow different rules

If “defense evidence” refers to a civil case, Rule 37 applies in the trial court. A party may seek a new trial based on newly discovered evidence that could not, with reasonable diligence, have been discovered and produced at trial and would probably alter the result.

The motion must be filed within the period for taking an appeal—ordinarily 15 days from notice of the judgment or final order—and supported by affidavits of the proposed witnesses or authenticated documents.

A civil motion for reconsideration is not normally a vehicle for adding evidence that was omitted at trial. After judgment becomes final, newly discovered evidence by itself is not a ground for annulment under Rule 47. Annulment is confined to extrinsic fraud and lack of jurisdiction and is available only when ordinary remedies are no longer available through no fault of the petitioner. Relief under Rule 38 also has distinct grounds and strict time limits: generally within 60 days after learning of the judgment, order, or proceeding and no more than six months after its entry or occurrence.

The particular rules may differ for small claims, election cases, labor and administrative proceedings, family cases, and other special proceedings.

Frequently asked questions

Can a new witness automatically reopen a criminal case?

No. The defense must explain why the witness could not have been discovered and presented earlier despite reasonable diligence, show that the testimony is admissible and material, and demonstrate that it would probably affect the judgment.

Is an affidavit enough?

Usually not by itself. An affidavit is required support for certain motions, but the court may examine the witness and allow cross-examination. The affidavit must also address personal knowledge, timing, diligence, materiality, and the reason for any prior silence.

What if former counsel simply forgot to present the evidence?

That ordinarily does not make known evidence newly discovered. Whether counsel’s conduct created a separate constitutional or procedural issue depends on the complete record and the seriousness and effect of the omission.

Can CCTV or chat messages qualify?

Potentially. The defense must preserve and authenticate them, establish lawful acquisition, explain why they were unavailable despite reasonable diligence, and show that they would probably change the result.

Can the trial court reopen a case after the Court of Appeals conviction is final?

Ordinarily, no. Rule 119 allows reopening only before finality of the conviction. A final judgment cannot be set aside merely to receive ordinary new evidence.

Can DNA evidence be used after final judgment?

Yes, if the requirements of the Rule on DNA Evidence are met. A relevant biological sample must exist, and testing must probably lead to reversal or modification. Favorable results support a motion for new trial or reconsideration but do not automatically result in acquittal.

Does new evidence erase the earlier trial?

Not necessarily. When a new trial is granted solely for newly discovered evidence, the evidence already taken generally remains, the new evidence is received, the prosecution may rebut it, and the court renders a new judgment.

Can the prosecution reopen a final acquittal because it found new evidence?

As a general rule, no. A valid acquittal is immediately final and is protected by the constitutional rule against double jeopardy. Exceptional proceedings alleging that the acquittal was legally void because the prosecution was denied due process or the court acted with grave abuse are not ordinary appeals and do not allow routine reweighing of evidence.

Official and primary references

This article provides general legal information, not legal advice or a prediction of any case’s outcome. The proper remedy depends on the complete record, the type of proceeding, and the exact date the judgment became or may become final. Sources and procedures were checked as of July 24, 2026.