Pacific Gas & Electric said Thursday that its equipment had probably caused the Camp Fire, the catastrophic November blaze that destroyed thousands of homes in Paradise, Calif., and killed at least 86 people.

PG&E, which filed for bankruptcy protection in January, said it had recorded a $10.5 billion charge in anticipation of damage claims for that fire, the deadliest in state history. Largely as a result, the company reported a $6.9 billion loss for 2018.

Though the cause of the fire is still under official investigation by California officials, PG&E said it “believes it is probable that its equipment will be determined to be an ignition point of the 2018 Camp Fire.” Attempts to determine the fire’s cause center on the 56-mile Caribou-Palermo electric transmission line.

The California Department of Forestry and Fire Protection has said the fire started at 6:33 a.m. on Nov. 8 near a tower on that line. PG&E said that its line de-energized at 6:15 a.m., adding that 15 minutes later an employee observed a fire near the tower. Later that day, utility workers discovered that a part had separated from an arm on the tower, the company said.