OMAHA, Neb. (AP) — A Nebraska prosecutor says he will charge two Omaha police officers with assault in the death last month of a mentally ill man who was shocked with a stun gun a dozen times.

Douglas County Attorney Don Kleine made the announcement Wednesday in the case of two former officers who confronted 29-year-old Zachary Bearheels on June 5 at an Omaha convenience store. Officials say Bearheels died after being shocked 12 times with a Taser, punched and dragged by his hair by the officers.

Scotty Payne and Ryan McClarty were fired from the Omaha Police Department this month based on the recommendation of police Chief Todd Schmaderer.

Kleine says he’s charging Payne with second-degree assault, a felony punishable by up to 20 years in prison. He says he’s charging McClarty with third-degree assault, a misdemeanor punishable by up to one year in prison.