Cal-Fire is investigating a suspicious fire that burned up some vehicles in the wee hours of Wednesday morning on the eastern outskirts of Redding. Just after 2AM Cal-Fire, Shasta County Fire and Redding Fire were dispatched to Airport Road in the Charlanne Drive area. Two pickup trucks and a sedan were fully engulfed in flames. They were extinguished before the fire could spread to nearby structures, but there was nothing left to the vehicles but scorched metal. The cause remains under investigation.