ABC15 Arizona – Officers say 21-year-old Zachary Penton called police and told them he shot his roommate, 41-year-old Daniel Garofalo, after some sort of altercation.
Garofalo was pronounced deceased on scene.
Penton was taken into custody without incident. He is being held on suspicion of second-degree murder.
Just two days before the murder, Penton appears to have posted a threat on a social media account connected to his name.