The shooting was first reported to San Bernardino police shortly after 11 a.m. Sunday in the 3500 block of E. 20th Street.
Witnesses told investigators they saw a man leaning out of the passenger-side window of a passing dark colored SUV and opening fire.
Responding officers found a man suffering from a gunshot wound in a grassy area between two structures. The victim, identified as 21-year-old Andrew Martinez of San Bernardino, was transported to an area hospital, where he was pronounced dead.
Police said Martinez had no criminal history and was not a documented gang member.
A second man was shot in the leg. He was transported to a different hospital for treatment and released. That man's 8-year-old daughter was walking with him and Martinez at the time of the shooting, but the girl was not injured.
That injured second victim, whose identity was not released, is a documented gang member, police said.
Investigators believe this shooting was likely gang related. If you have any information about this incident, you're urged to contact Detective Thompson at (909) 384-5665 or Sgt. Kokesh at (909) 384-5615.