A Southern California mosque was damaged by fire on Friday, and its leader said people there at the time believe it was intentionally set. Flames were reported just after noon at the Islamic Center of Palm Springs, according to the Riverside County Fire Department. The fire was contained to the small building’s front lobby, and no one was injured. Its cause is under investigation. People there described hearing a loud boom and seeing flames, said Reymundo Nour, the mosque’s acting imam, who was not on the site at the time. He said the mosque had been fire-bombed. The FBI was...