Newly Discovered Evidence in Minnesota Criminal Cases

Why the Standard Is Strict

The justice system places a high value on the finality of convictions, so reopening a case based on new evidence is not easy. Courts require more than just additional evidence — they apply a demanding test to ensure the evidence is truly new, truly material, and could realistically have changed the outcome. This guards against endless relitigation while still leaving a path for genuine new proof.

What this means for you: "I found more evidence" is not enough on its own. The evidence has to clear a high bar that's specifically designed to be hard to meet.

The Test for Newly Discovered Evidence

Minnesota courts generally require that the evidence:

• Was not known to the defendant or counsel at the time of trial;
• Could not have been discovered through due diligence before trial;
• Is not merely cumulative, impeaching, or doubtful; and
• Would probably produce a different result (or, in some contexts, an acquittal or more favorable outcome) on retrial.

What this means for you: Each part matters. Evidence that was available with diligence, or that merely adds to what the jury already heard, or that only impeaches a witness, usually won't qualify — even if it's new to you.

The Due Diligence Requirement

A frequent sticking point is due diligence: the evidence must be something that couldn't have been found earlier with reasonable effort. Evidence that existed and was discoverable before trial generally doesn't count, no matter when it actually turned up. This is often where these claims succeed or fail.

Two Vehicles: New-Trial Motion and Postconviction

Newly discovered evidence can support relief through different procedures depending on timing:

• Motion for a new trial — an earlier, trial-court vehicle on a tight deadline after the verdict;
• Postconviction relief — a later avenue, after the direct-appeal stage, that can be based on newly discovered evidence meeting the standard.

What this means for you: When the evidence emerges determines which path applies. Early discovery may fit a new-trial motion; later discovery typically goes through postconviction.

Examples of Potentially Qualifying Evidence

Depending on the facts and the strict test, this can include things like a witness recantation, newly available forensic or scientific evidence, or proof pointing to another perpetrator — but only if it satisfies all parts of the standard, including that it couldn't have been found earlier and would probably change the result. Recantations in particular are viewed with caution.

How It Connects to Other Remedies

Newly discovered evidence is a ground that runs through the motion for a new trial, postconviction relief, and the broader appeals framework. It can also intersect with claims like an alternative perpetrator defense when the new evidence points elsewhere.