One of the jurors hearing evidence in the trial of a white North Carolina police officer says he challenged his colleagues to determine what an unarmed black man did to lead the defendant to fatally shoot him.

Moses Wilson, 67, said he wrote a message on the jury room board asking what Jonathan Ferrell did to be shot to death by Charlotte-Mecklenburg police officer Randall Kerrick nearly two years ago. He said when he first went into deliberations, he didn't know how he would vote.

Wilson determined that Ferrell didn't do anything to warrant his death, and voted to convict Kerrick of voluntary manslaughter. After deliberations that spanned four days, the racially diverse jury of eight women and four men couldn't reach a unanimous decision and a mistrial was declared.