California shooting: Police reveal sergeant slain in Thousand Oaks massacre was killed by friendly fire

A police sergeant who died trying to stop a gunman after he opened fire in California bar was killed by a fellow officer’s bullet. Sergeant Ron Helus was shot five times by Marine veteran Ian Long after he sprayed bullets into a crowd at a country music night in Thousand Oaks on 7 November, killing 12 people. LD Maples, chief of the California Highway Patrol's coastal division said that the patrolman "had no clue" that he had been responsible.

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