A federal judge has ordered a man charged in California’s deadly Palisades Fire to remain jailed amid concerns about his mental health. A prosecutor said Jonathan Rinderknecht had traits of an arsonist and his family had worried about his declining mental state. Assistant U.S. Attorney Rachel Lyons said during Thursday's hearing that Rinderknecht was a flight risk because he had family in France and spoke French. Rinderknecht was arrested Tuesday but was first interviewed by authorities Jan. 24. Investigators said that during the intervening months they worked to rule out anything else that might have started the fire that killed 12 people.