MARIN CITY, Calif. - Authorities say at least three people were killed after a fight broke out among a group of people wielding sticks and bats at a large apartment complex in Marin City, north of San Francisco.

Marin County Sheriff's Office spokesman Lt. Doug Pittman tells the San Francisco Chronicle that the fight broke out Sunday morning and that there may be more victims.

Pittman says three people were confirmed dead.

He says officers from multiple agencies are responding to the scene, which was not immediately secured.