NEW YORK (AP) — The suspected killer of three men found shot to death in a parked car near Columbia University was arrested on Saturday after investigators identified him as the man seen on video strolling away from the bloody scene, police said.

Roberto Nunez, 30, was arrested on murder charges in the June 7 killings. It wasn’t immediately clear whether he had a lawyer, and a possible phone number for one of his relatives rang busy Saturday evening.