A person died Saturday night in a two-alarm fire the Rossmoor community in Walnut Creek, the Contra Costa County Fire Protection District said.
The fire occurred in the 1200 block of Leisure Lane.
Three other units in the building suffered smoke and water damage; residents in all four of those units have been displaced, Bachman said.
No one else was injured.
Investigators remained on scene late Saturday night trying to determine a cause of the fire, Bachman said.