Travione ’Tray’ Rashad Mason, 26, was shot and killed on July 11, 2015, while attending a birthday party in the 11100 block of South Berendo Avenue in Los Angeles. Deputies from the Los Angeles County Sheriff’s Department responded to reports of a loud party and a gunshot around 11 p.m.; three men had been shot. Mason, who worked as a sous chef for a catering company and had been helping at the event, was struck in the upper body and pronounced dead at the scene. A co-worker was shot in the hand and taken to hospital, and the 55-year-old party host was grazed by a bullet but declined treatment.

Investigators found the shooting happened in the residence’s backyard but did not have a description of the shooter. Authorities reported the suspect was believed not to have been a partygoer and had opened fire into the large gathering; the motive and the shooter’s identity remained unknown. No arrests had been made. Mason was remembered by his employer as a hardworking father saving to expand the business he worked for.

Did anyone at the party or in the neighborhood see someone leave the backyard that night or have other information about who opened fire?