The fire was reported to have started on the second floor and was driven by the high winds that blew through San Diego on Monday. The rapidly spreading fire prompted the call for a second alarm and then, when the roof collapsed, a third alarm.
According to a spokesperson for ATF, a single ATF Certified Fire Investigator responded to the scene to assist Chula Vista Fire Investigators with the origin and cause investigation, however, based on the size of the building, the amount of fire damage, and the firefighter injuries, Chula Vista Fire Department requested the assistance of ATF’s NRT.