(AP) — A county attorney says an Omaha teenager will be charged as an adult in the killing of another teen.

Douglas County Attorney Don Kleine announced Monday that 17-year-old Christopher Spears would be prosecuted as an adult. He’s charged with second-degree murder and use of a weapon to commit a felony.

Spears, a student at Northwest High School in Omaha, was arrested after the killing of 17-year-old Dominique Hollie.

Kleine says the shooting happened after Spears made sexual comments about Hollie’s sister, prompting Hollie to go to his bedroom and grab a sawed-off shotgun that he later returned to his room.

Kleine alleges that after an argument, Spears went to Hollie’s room, returned with the shotgun and shot Hollie in the face.

Police arrested Spears a few blocks away.