Texas police on Sunday were trying to figure out what prompted a black teenager to drive his car into a car dealership, and why a white police officer still in training fatally shot the unarmed 19-year-old four times.

Christian Taylor became the latest unarmed black man to die at the hands of a white police officer after officials said he was seen on security surveillance tape vandalizing cars at an auto dealership in Arlington.

Taylor was shot four times by Arlington police officer Brad Miller, 49, who was still undergoing training with the department, Arlington police chief Will Johnson said on Saturday. The Tarrant County Medical Examiner's Office found Taylor had gunshot wounds to the neck, chest and abdomen.