SAN FRANCISCO (AP) — San Francisco District Attorney George Gascon tells The Associated Press that surveillance video shows that commuters were distracted by their cell phones and tablets when a 30-year-old man waved a gun around a crowded light rail car.
Minutes later on Sept. 23, police say 30-year-old Nikhom Thephakaysone (ni-KOM' tep-KAY'-sahn) followed another man off the train and shot him in the head.
Gascon says that the video shows Thephakaysone bringing the gun to his face several times and "no one sees this going on."
A spokesman for Gascon says some passengers told investigators they didn't know the suspect had a gun until they heard a shot.
Authorities have released a portion of the surveillance footage, but not the part they say shows Thephakaysone pulling out the gun, citing the ongoing investigation.