The Los Angeles Fire Department said the fire that burned 40 acres in the Mandeville Canyon and Sepulveda Pass area is under active investigation and a cause has not yet been determined.
By Wednesday afternoon the fire was 100 percent contained, and LAFD crews left the scene as of 8:20 p.m.
Although there were no civilian injuries, two firefighters were taken to the hospital with heat-related injuries. They were in fair to serious condition on Wednesday night.
Earlier Wednesday, assistant fire chief and incident commander for the Mandeville Canyon Fire, Robert Franco said a 15-year-old resident's lit cigar may have been the cause of the brushfire. The blaze began around 4 p.m. Monday, burning close to area homes.