Authorities in California charged a 29-year-old man with starting a fire that days later erupted into the most destructive blaze in Los Angeles history and destroyed much of the Pacific Palisades neighborhood, federal law enforcement officials announced Wednesday.

Authorities accused 29-year-old Jonathan Rinderknecht of lighting a fire on New Year’s Day that was put out initially, but continued to smolder underground before reigniting during high winds, acting U.S. Attorney Bill Essayli said during a news conference.

Rinderknecht fled the scene of the original fire, but returned to the same trail where he’d been earlier to watch it burn, Essayli said. During an interview with investigators, he lied about his location, claiming he was near the bottom of the hiking trail, Essayli said.

He was arrested Tuesday in Florida and was due to appear in court Wednesday. Essayli declined to say how investigators believe Rinderknecht started the Jan. 1 fire.

The fire that erupted on Jan. 7 killed 12 people and destroyed more than 6,000 homes and buildings.

Investigators still haven’t determined the cause of that blaze or the Eaton Fire, which broke out the same day in the community of Altadena and killed 18 people.

Both fires burned for days, reducing entire neighborhoods to rubble and ash.

An outside review released in September found that a lack of resources and outdated policies for sending emergency alerts led to delayed evacuation warnings.

The report commissioned by Los Angeles County supervisors said a series of weaknesses, including “outdated policies, inconsistent practices and communications vulnerabilities,” hampered the county’s response.

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