SEATTLE, WASHINGTON — A 36-year-old nightclub security worker was killed and a woman was seriously injured early Sunday morning after a gunman opened fire from a vehicle in the parking lot of a South Seattle nightclub, according to the Seattle Police Department.

A security guard and an off-duty Mesa police officer opened fire on an armed teenager outside a private Halloween party early Saturday morning after the teen allegedly shot at the guard when he was denied entry to the event, according to authorities.