James Gregory Medrano, 26

James Gregory Medrano, a 26-year-old Latino, was shot and killed Saturday, Nov. 19, in the 12200 block of Sproul Street in Norwalk, according to the Los Angeles County coroner's records. 

Medrano was at the Norwalk Skate Park shortly before 8 p.m. when he noticed a man trying to rob another skater of his board, said Los Angeles County Sheriff's Sgt. Bill Cotter. 

Witnesses told investigators that Medrano tried to intervene and got into an argument with the robber, Cotter said. The robber then pulled out a handgun and shot Medrano multiple times.

The skate park was crowded, Cotter said, but when the shooting began, most people ran away, including the victim of the robbery. 

Medrano fell to the ground, where he was pronounced dead at 8:18 p.m., according to coroner's records. 

The gunman was last seen running through the park toward Sproul Street, Cotter said. Witnesses described him as a man in his 30s who appeared to be of mixed race: possibly white, black and/or Pacific Islander. 

The killer did not take the skateboard, Cotter said, but investigators have not been able to find the skater Medrano was trying to help. 

Medrano lived in Norwalk with his grandparents, not far from the park, Cotter said. 

Investigators are hoping more witnesses will come forward with descriptions of the shooter. Anyone with information is asked to call the Sheriff's Department Homicide Bureau at (323) 890-5500. Those wishing to remain anonymous should call Crime Stoppers at (800) 222-8477. 

Contact the Homicide Report. Follow @latimeshomicide on Twitter.