An investigation is underway into a lashing wire that may have caused the Silverado Fire,
a blaze that has forced tens of thousands of California residents to evacuate as it grows.
Southern California Edison is working with the Orange County Fire Authority to find the source of the more than 12,000-acre wildfire, a spokesperson told NBC News in a statement on Tuesday.
Two firefighters were critically injured in the fight to contain the inferno in and around the community of Irvine.
Over 75,000 people were under evacuation orders due to the Silverado Fire as of Tuesday morning, the Orange County Fire authority announced.
Southern California Edison sent a letter late Monday to the California Public Utilities Commission acknowledging its electrical facilities are in the area where the Silverado fire broke out.
But it said there was “no indication of any circuit activity prior to the report time of the fire” or downed conductors.
“However, it appears that a lashing wire that was attached to an underbuilt telecommunication line … may have resulted in the ignition of the fire,” the letter said.