One official discounts arson in OC fire

Officials are investigating the cause of all the big blazes over the last few days -- Montecito, Sylmar and Orange County. But at least one official doesn't believe the blaze that started in Corona and blew all the way to the steps of Diamond Bar was caused by arson.  From the O.C. Register:

Corona Mayor Jeff Miller said Sunday that he was notified that authorities 'did not believe it was arson. But it has not been confirmed.' Miller's report matched that of another top-level official in Orange County.