Justin Valdez, a 20-year-old student at San Francisco State University, was shot and killed on September 23, 2013, while exiting the M-Oceanview Muni line at Randolph and Bright streets in the Ingleside District. The shooting happened about 9:50 p.m. as he was returning from water polo practice. Valdez was from Garden Grove, California, and was active in environmental causes and swimming.

Police arrested 30-year-old Nikhom Thephakaysone at his Oceanview home soon after the slaying. Authorities say surveillance footage shows Thephakaysone brandishing a gun on the train, following Valdez off the car, then shooting him in the back. Officers reported finding firearms, knives, and survival gear at the suspect’s residence, and described the attack as a random act of violence.

No trial date has been resolved and the case remains pending, leaving Valdez’s family without closure.