Residential, Single Family Home Fire put out by sprinkler system at L.A. mansion (Los Angeles, CA) November 5, 2013 viking210 A Los Angeles mansion caught on fire the afternoon of Sunday, November 3. According to authorities, the fire began in one of the residence’s bathrooms, and the heat from the fire activated the fire sprinkler system. The fire sprinklers extinguished the fire before fire crews arrived. There were no injuries reported.