Tubbs Fire, which killed 22 in NorCal, caused by private electrical system, not PG&E, Cal Fire investigators say

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The deadliest fire of the 2017 North Bay fires was reportedly caused by private equipment. ( AP)

The Tubbs Fire, which devastated Sonoma County in October 2017, was caused by a private electrical system, according to Cal Fire.

Cal Fire sent out a press release Thursday morning stating PG&E is not to blame for the start of the fire.

Instead, it was a "private electrical system adjacent to a residential structure," the statement said.

Investigators did not identify any violations of California State law.

You can read the full press release here.

The Tubbs Fire destroyed more than 5,000 structures, burned more than 36,000 acres and killed 22 people.

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