A federal magistrate in Florida on Thursday ordered a man charged in California's deadly Palisades Fire to remain jailed after a prosecutor said he had traits of an arsonist and his family had worried about his declining mental state.

Federal officials have said Jonathan Rinderknecht, who lived in the area at the time, started a small fire on New Year’s Day that smoldered underground before reigniting nearly a week later and roaring through the wealthy enclave, home to many of Los Angeles’ rich and famous.

The fire, which left 12 dead in the hillside neighborhoods across Pacific Palisades and Malibu, was one of two blazes that broke out on Jan. 7, killing more than 30 people in all and destroying over 17,000 homes and buildings while burning for days in Los Angeles County.

Assistant U.S

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