(WHDH) — Call it an extreme case of arachnophobia.

A man who tried to kill multiple black widow spiders with a blowtorch accidentally set his parents’ California home on fire Tuesday, officials said.

Firefighters responding to a reported structure fire at a home in Fresno found flames shooting from a second-story attic.

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More than two dozen firefighters worked to extinguish the fire.

The man was said to be house-sitting when he stumbled upon the spiders.

No injuries were reported.

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