LINCOLN, Neb. (AP) — The Nebraska Supreme Court has overturned the kidnapping and assault convictions of a man accused of attacking his former wife.

The court said in a ruling Friday that the Custer County trial court should have held a hearing on the defendant’s claim that prosecutors had seen his confidential trial strategy, thus violating his constitutional rights.

Tyler Bain was convicted in 2014 of the 2011 attack and sentenced to life in prison.

One of the prosecutors who handled his case had told the trial court before Bain’s trial about seeing a document from the defense that discussed trial strategy. The trial judge determined that the prosecutor who actually tried the case hadn’t seen the document, but the high court says that was insufficient to ensure Bain’s rights were not violated.