Newly Discovered Evidence After a Louisiana Conviction: What Qualifies and What Does Not

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In Louisiana, “newly discovered evidence” means a fact that genuinely could not have been found earlier, not a fact the defense overlooked or already had but did not use at trial. Louisiana law gives a limited window to bring it forward, and a specific test decides whether it truly counts. The path depends on where your case stands: a conviction still on appeal follows different rules than one already final.

Table of Contents

What “Newly Discovered” Actually Means, and the Two Tracks You Could Be On

Newly discovered evidence is evidence genuinely unavailable at trial: evidence that did not exist yet, such as a forensic method not yet developed at trial, or evidence that existed but could not reasonably have been located despite diligent effort, such as a witness who came forward years later.

Anything already in the trial record does not qualify, nor does anything counsel knew or should have found.

Louisiana handles this line with a due-diligence test built on a presumption: under La. Code Crim. Proc. art. 930.8, facts known to any attorney who represented the petitioner are presumed known by the petitioner, rebuttable only by clear and convincing evidence.

Facts contained in the court record are treated differently: those are deemed known outright, with no rebuttal available.

Which deadline applies depends on one question: has the conviction become final, or is the case still moving through the trial court or on appeal?

The first track applies before a conviction is final. Under La. Code Crim. Proc. art. 851, a trial court may grant a new trial when new and material evidence, not discovered before or during trial despite reasonable diligence, would probably have changed the verdict. This motion is filed with the trial court that heard the case, not through the appellate or post-conviction pipeline.

Under La. Code Crim. Proc. art. 853: A motion for a new trial based on newly discovered evidence must generally be filed within one year after the verdict or judgment.

The motion also has to be specific. La. Code Crim. Proc. art. 854 requires a sworn allegation of fact showing:

That reasonable diligence was exercised.
The witnesses’ names and a concise statement of the newly discovered evidence.
The facts that evidence would establish.
That the evidence is not beyond the court’s process to secure.

A vague assertion that new information exists does not satisfy this.

The second track applies after the conviction and sentence are final, running through a post-conviction relief application under Articles 926.2 and 930.8, on the two-year framework described below.

A reader whose case is still on direct appeal, or still within roughly a year of the trial court’s verdict, likely belongs on the Article 851 track instead, with its shorter deadline and four sworn showings.

The Legal Standard: Materiality and Due Diligence

Once a conviction is final and on the post-conviction track, Louisiana’s newly discovered-evidence scheme runs on two separate parts, often blurred together.

Part One: The Substantive Claim Under Article 926.2

The first part is the substantive claim itself, governed by La. Code Crim. Proc. art. 926.2, which addresses factual innocence.

To succeed on the merits, the evidence has to clear every one of these:

New, reliable, and noncumulative.
Scientific, forensic, physical, or nontestimonial documentary evidence.
Or testimonial evidence corroborated by scientific, forensic, physical, or nontestimonial documentary evidence.

Why Courts Distrust Recantations

A recantation of earlier testimony, standing alone, can never be the sole basis for relief; it must be backed by scientific, forensic, physical, or documentary evidence.

Testimony given under oath at trial tends to be more reliable than a statement made years later, and a later change of story raises an obvious incentive problem: the witness may be protecting a friend, family member, or themselves.

None of that makes a recantation worthless; a court looks hard at when it surfaced, whether the original testimony was central to the verdict, and whether anything beyond the witness’s own account supports it.

Part Two: The Procedural Gateway

The second part decides whether an otherwise-late claim can be heard at all. Under Article 930.8’s exception to the filing deadline, a petitioner must show, by clear and convincing evidence:

Exceptional circumstances.
That the interest of justice will be served.
That manifest injustice will result if the claim is not considered.

What Changed on August 1, 2026

One more procedural bar was changed and tightened to be more restrictive recently. Act 54 of the 2026 Regular Session amended La. Code Crim. Proc. art. 930.4 so that a court must deny relief on a claim the petitioner knew of and failed to raise before conviction or raised at trial and then failed to pursue on appeal.

The previous version applied only when that failure was inexcusable. That qualifier is gone, so the diligence showing below matters more, and because the change is recent, ask counsel how courts are reading it.

Proving Due Diligence

This is where many otherwise sincere claims fall apart: feeling you tried hard, or noting the evidence surfaced later, is not enough.

The petitioner has to show the evidence could not have been found earlier despite real investigative effort.

Courts want to see:

What was actually done to look for it.
Whether records were subpoenaed.
Whether witnesses were sought out and interviewed.
Why, despite those steps, the evidence still could not be found.

That showing usually takes the form of a sworn affidavit; on the Article 851 track, Article 854 requires the same.

What Happens If the Claim Succeeds

Many families assume new evidence means immediate release. It rarely does. The claim generally proceeds to an evidentiary hearing, where the State responds, and the court weighs the new evidence against everything admitted at trial.

A grant of relief under Article 926.2 does not bar the State from retrying the petitioner, so even a successful claim can lead to a new trial rather than release.

Common Examples of Newly Discovered Evidence

Recanted Testimony

Never enough alone; it must be corroborated by scientific, forensic, physical, or documentary evidence, as explained above.

New Forensic Technology

A testing method that did not exist or was not accessible at trial can produce results impossible to obtain earlier. Success in this claim depends on a lot of factors, including how the evidence was used at the first trial.

Discredited or Outdated Forensic Science

This differs from new technology: the issue is not that a better test now exists, but that a method used to convict was treated as reliable at trial and has since been scientifically undermined.

That raises a harder due-diligence question: whether the method could have been challenged at trial or whether the discrediting itself is the new development. This is a tough standard.

A Previously Unavailable Witness

Someone who did not come forward or could not be located despite diligent effort and surfaces only after trial, when they could not have been reached before.

DNA Evidence

DNA testing can exclude someone as the source of physical evidence, and Louisiana courts have recognized claims built on that exclusion, still subject to the same test of genuine unavailability at trial.

A Brady violation is related but separate: there, the prosecution had favorable evidence and failed to disclose it, rather than evidence the defense could not reach.

If evidence in your case sounds like one of these situations, call the Ikerd Law Firm at (337) 366-8994.

What to Do Next

Bringing newly discovered evidence to a Louisiana court, once a conviction is final, happens through a post-conviction relief application, different from a direct appeal, which challenges what happened at trial on the existing record.

The Louisiana criminal appeal process and Louisiana direct criminal appeal guide explain how the appeals process works. Act 393 of the 2025 Regular Session recently amended Louisiana’s appeal procedures, effective August 1, 2025, so you should confirm the specifics against the current statute with counsel.

The due-diligence question is genuinely challenging to answer from the inside, and getting it wrong is costly. Chad Ikerd has handled more than 200 writs and appeals, much of it separating a real newly discovered evidence claim from a legally hopeless one.

A Lafayette criminal appeals attorney who reviews these matters regularly can tell you where your situation falls, and that is how a Louisiana appeals attorney finds errors others overlook, and it becomes a real advantage.

If you believe there is evidence in your case that a court has never seen, contact the Ikerd Law Firm at (337) 366-8994. We can help you understand whether your situation fits within Louisiana’s newly discovered-evidence framework and which track applies to your case.

Frequently Asked Questions

What Counts as “Newly Discovered Evidence,” and What Must I Prove to Have It Considered?

Evidence genuinely unavailable at trial, either because it did not exist yet or could not reasonably have been found despite diligent effort. Evidence already in the record or known to the defense does not qualify. You must show, by clear and convincing evidence, that the facts were unknown to you or prior attorneys, that you exercised due diligence, and that manifest injustice would result if not heard, with evidence that is new, reliable, and corroborated.

Is a Motion for New Trial the Same as Filing for Newly Discovered Evidence in Post-Conviction Relief?

No, they are separate paths with separate deadlines. A motion for a new trial under Article 851 is filed before finality, within thirty days of the verdict, and is heard by the trial court. Post-conviction relief under Articles 926.2 and 930.8 applies only once the conviction and sentence become final and has its own two-year deadline.

Can a Witness Recanting Their Testimony Alone Reopen My Case?

No. A recantation standing alone can never be the sole basis for relief. Courts view recantations with real suspicion, so the new account must be corroborated by scientific, forensic, physical, or documentary evidence.

If My Newly Discovered Evidence Claim Succeeds, Will the Person Be Released Immediately?

Not automatically. A successful claim generally leads to an evidentiary hearing, and the outcome may be a new trial rather than release. The State is not barred from retrying the case.

How Is Newly Discovered Evidence Different From a Brady Violation, and Does DNA Evidence Automatically Qualify?

Newly discovered evidence was unavailable to the defense despite diligent effort; a Brady violation is the prosecution’s failure to disclose evidence it already had. DNA evidence does not automatically qualify either—it must pass the same due-diligence test. If something new has surfaced in a case you thought was over, call the Ikerd Law Firm at (337) 366-8994 or reach out through our contact page.