At 9:56 am Thursday, the Antioch Police Department responded to a report of a pellet gun shooting on Palomar Drive in Antioch.
According to initial reports, the shooting involved a group of juveniles where one of them, a 15-year-old male, was struck in the chest.
Contra Costa Fire Protection Fire District Engines 88 and 82 and AMR responded to the scene and reported they were beginning CPR on the victim who was later transported to Sutter Delta Medical Center in critical condition.
Although police have not yet confirmed details of the shooting, it appears to possibly be an accidental shooting.
Antioch Police are still on scene investigating and will be on scene for the next several hours.
Check back for updates.