Authorities say three people have been fatally shot with at least nine others injured at a home in Long Beach, California.

Long Beach fire spokesman Jake Heflin said firefighters arrived at the home around 10:44 pm. on Tuesday to a scene “filled with chaos.”

According to local law enforcement, three men were dead and the nine others were injured. Their conditions weren’t immediately available.

Some witnesses say there might have been a Halloween party going on at the house.

Forty-seven-year-old Oswaldo Morales told the LA Times he heard as many as 17 shots. Some residents say they heard up to 20 shots.

Morales says minutes later police and fire vehicles could be heard in the neighbourhood.