An investigation by utility Southern California Edison is increasingly focused on whether a decommissioned line was re-energized, sparking the deadly blaze.

Investigators in Southern California are continuing to pursue answers as to what caused the Eaton Fire, which resulted in nearly 10,000 structures burning down in Los Angeles County. The latest findings point to a potential “zombie” power line.

Investigators are looking into whether a defunct “zombie” power line ignited the apocalyptic Eaton Fire that incinerated nearly 10,000 structures in Los Angeles County — despite utility company officials insisting their equipment likely didn’t cause the blaze.