Lawyers with LA Fire Justice say the Eaton Fire, which destroyed thousands of homes in Altadena and Pasadena, was "preventable," blaming the fire on Southern California Edison's equipment.

"The cause of the fire remains under investigation, and SCE continues to cooperate with authorities," the utility agency wrote.

New regulatory filings shows power line surges, malfunctions during high winds, including at a transmission tower near where Hurst blaze began.