POSTVERDICTS LAW LIBRARY
What Is Newly Discovered Evidence?
Newly discovered evidence is information found after trial that may bear on guilt, punishment, or the fairness of the proceedings. The legal test varies by jurisdiction and by the type of claim. Courts commonly examine whether the evidence truly could not have been found earlier through reasonable diligence and whether it is important enough to affect the case.
General educational information only. Not legal advice.
Important terms
Newly available evidence was known earlier but could not be presented, which may differ from evidence that is newly discovered.
Due diligence concerns reasonable efforts to locate or obtain the evidence before the relevant deadline or proceeding.
Materiality asks whether the evidence matters to an issue the law treats as significant.
Why it can matter
New evidence can support different legal theories, including a state-law new-trial claim, a Brady claim, or an actual-innocence gateway. Each theory has its own elements.
The source, reliability, chain of custody, consistency with the existing record, and reason for late discovery can all matter.
Limits to keep in mind
Evidence is not necessarily 'new' because the person filing the petition recently learned about it.
Cumulative or purely impeaching evidence may receive less weight under some standards, and recantations are often examined with particular caution.