PARADISE (AP) — Pacific Gas & Electric says it has restored power interrupted by a wildfire six weeks ago to all customers able to receive it.

PG&E said Wednesday the last of about 10,000 residents of Paradise and the surrounding area that lost electricity on Nov. 8 had their power restored by Sunday night. The San Francisco-based utility said it still working to restore natural gas service to many customers.

PG&E also said it is impossible to provide service to customers in remote areas who lost power during the state’s deadliest wildfire. Officials are investigating whether PG&E’s equipment started the wildfire that leveled Paradise, killed at least 86 people and destroyed close to 15,000 homes.

PG&E told regulators that a high-voltage power line malfunctioned near the fire’s origin.

Copyright 2018 The Associated Press.