Four people died in a shooting at a Halloween party near San Francisco, United States.

At least four people were killed and several injured Thursday night in a shootout at a Halloween party near San Francisco, according to authorities and the local press. "Four dead and several wounded in the Orinda shootings, more details to come," tweeted the Contra Costa County police on Friday morning.

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The shooting took place at a Halloween party in a rented house on Airbnb around 23:00 local time (06:00 GMT Friday) in the city of Orinda, 30 km from San Francisco, according to the NBC Bay Area. Three people were killed and nine injured in another shootout at a Halloween party in southeastern Los Angeles on Tuesday night.