A Northern California wildfire that killed four people and destroyed more than 200 buildings last year was sparked when tree branches came into contact with Pacific Gas & Electric power lines, officials said in a report.

Investigators with the California Department of Forestry and Fire Protection seized equipment belonging to PG&E in the weeks after the Zogg Fire tore through rural communities in Shasta and Tehama counties last September and October.

“After a meticulous and thorough investigation, Cal Fire has determined that the Zogg Fire was caused by a pine tree contacting electrical distribution lines owned and operated by Pacific Gas and Electric located north of the community of Igo,” the agency said in a short news release.

PG&E officials didn’t immediately respond to a request for comment.

The Zogg Fire investigative report has been forwarded to the Shasta County District Attorney’s Office, Cal Fire said.

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