Southern California Edison is looking into whether its equipment is tied to the Eaton and Hurst Fires, its parent company said, though the cause has not been officially determined.

Southern California Edison (SCE), a subsidiary of Edison International , said on Thursday that it was probing whether its equipment was associated with the ignition of two Los Angeles-area wildfires this year.

A month after the L.A. firestorms brought unprecedented levels of destruction, the region is still grappling with basic questions about what caused the blazes, why evacuations were so chaotic and whether officials were prepared.