The teens, ages 12, 14 and 17, were taken to a local hospital with non-life threatening injuries.
Police are searching for the suspect, 48-year-old Raul Izarraras Ramirez, who was described as a Hispanic male, 5 feet 7 inches tall and 180 pounds.
Authorities said he is considered armed and dangerous. The motive for the shooting remained under investigation.
Anyone with information was urged to call the /*San Bernardino Police Department*/ at (909) 384-5745.