Authorities allege Halstenberg, a delivery driver from Norco, attempted to ignite three fires in one hour, two of which were extinguished by firefighters and a passerby. The third blaze, called the Line Fire, has consumed 61 square miles in the San Bernardino Mountains.

The man authorities say started the still-raging Line Fire in southern California is innocent, his mother said, even as investigators worked to connect him to more intentionally-set blazes.