SANTA CRUZ, Calif. (AP) — Dozens of wildfires raging throughout Northern California have now claimed at least five lives and threaten tens of thousands of homes, authorities said Thursday.

The death of a resident in Solano County, in the northeastern San Francisco Bay Area, was reported Thursday by Sheriff Thomas A. Ferrara, although he didn’t have any additional details.

In addition, three civilians had died in Napa County since the fires began, said Daniel Berlant, a Cal Fire assistant deputy director. In all, more than 30 civilians and firefighters have been injured.

It wasn’t immediately clear whether the Solano and Napa county fatalities included a Pacific Gas & Electric utility worker who was found dead Wednesday in a vehicle in the Vacaville area between San Francisco and Sacramento.

A pilot on a water-dropping mission in central California also died Wednesday when his helicopter crashed.