DETROIT (WWJ/AP) - The man whose arrest led to the shooting death of a 7-year-old girl by Detroit police has pleaded guilty in the slaying of a teenager following a dispute outside a party store.

The Wayne County prosecutor’s office said 35-year old Chauncey Owens received a sentence agreement of 28 years in prison following his plea Monday to second-degree murder in the slaying of 17-year-old Je’rean Blake.

As part of a plea deal, prosecutors said Owens has agreed testify in future proceedings about who gave him the weapon used to kill Blake last May. He can reduce his sentence by two years if prosecutors is satisfied with his testimony.

Police said the shooting allegedly triggered by the teen giving Owens a dirty look.

Sentencing was set for May 23.

Owens was arrested in an upstairs unit of a duplex during a May 16th raid.

Aiyana-Stanley Jones was asleep on a sofa in the first floor of the two-family flat when Detroit Police tossed a flash-bang grenade through a window and burst through the front door.

Detroit police said an officer’s gun accidentally discharged, after he was bumped by the girl’s grandmother, striking the girl in the head as she lay on a sofa in the downstairs unit.

The Associated Press contributed to this report..