So far, the evidence suggests the fire was not caused by problems with the vehicle's lithium-ion battery pack, new technology components or exhaust routing, Fisker said today.

This is the second Fisker investigation of a Karma car fire in four months. In early May, a Karma was destroyed in a garage fire in Sugar Land, Texas. That car was not plugged in at the time, and the cause of that fire is still unknown, Fisker says.

The Karma involved in Friday's California incident was not charging at the time, and there were no injuries. The fire began outside the engine compartment.

"Continued investigative efforts will be primarily focused within the specific area of origin, located forward of the driver's side front tire," Fisker said in today's statement.