Three people were shot dead and at least nine others were injured in a mass shooting at a home in Long Beach, Calif., on Tuesday night, the AP reports. Long Beach Fire Department spokesman Jake Heflin says firefighters arrived at the home around 10:44pm and found a scene "filled with chaos," reports the Los Angeles Times. Witnesses say they heard up to 20 shots. The Press-Telegram reports that the shooter or shooters targeted a Halloween party in a yard next to a nail salon. "Obviously this is a tragic event in our city," Heflin says. It's not clear whether anybody has been taken into custody in connection with the shooting. Authorities say some of the nine people hospitalized had life-threatening injuries. (More California stories.)