Police said five kids were walking along the 38000 block of 11th Street east of Avenue Q-12 when a person came from an empty lot and approached them from behind.
The suspect shot a 14-year old boy three times in the torso, sheriff's officials said. The boy was airlifted to a hospital for treatment.
The teen is expected to survive. None of the others were injured.
The suspect, later identified as a gang member, fled on foot but was quickly arrested. Authorities said the victim is not a gang member.
The motive for the shooting remains unclear.