The incident started shortly before 5 p.m. Saturday on the 6700 block of Etiwanda Avenue, where the victims were sitting in a car. That's when the suspected gunman fired at them.
Police confronted the suspect, then shot and killed him after catching up with him on Darby Avenue.
Nearby resident Richie Garcia said one of the shooting victims came to his door asking for help. Garcia said the victim was covered in blood, and it was a tragic scene to witness. Garcia said his wife and stepson knew the victim well.
Both victims were rushed to an area hospital. No officers were hurt.
The shooting was under investigation.