Pacific Gas & Electric Co. notified California regulators that its equipment may have been involved in the start of the Dixie Fire, which has burned more than 18,000 acres in Butte County, Calif.

PG&E told the state Public Utilities Commission that a repair worker responding to a circuit outage on July 13 spotted blown fuses in a conductor atop a pole, a tree leaning into the conductor and fire at the base of the tree, The Associated Press reported.

The fire has grown to nearly 47 square miles, mostly in remote wilderness, the AP reported Monday, July 19. The utility said the California Department of Forestry and Fire Protection collected equipment from where the fire started, according to the wire service.

Faulty PG&E equipment has been blamed for numerous fires in California, including the 2018 Camp Fire, which killed 85 people and all but destroyed the town of Paradise.