Several insurance companies have filed lawsuits blaming Pacific Gas & Electric Co. for a deadly California wildfire that destroyed 14,000 homes and triggered billions of dollars in insurance claims.

The lawsuits filed by Allstate, State Farm, USAA and their subsidiaries come on top of several other cases filed by victims of the Camp Fire, which devastated the towns of Paradise, Magalia and Concow north of Sacramento after it started Nov. 8.

Investigators have not pinpointed a cause for the fire. But the insurance companies note in their lawsuits that flames ignited near the site of a transmission-line irregularity reported by the utility. They also note a potential second ignition point involving PG&E distribution lines.

Read the full news article here, as well as lobbying efforts by utilities for protection.