Fisker has issued a follow-up to this past weekend’s incident where a Karma extended-range electric sedan caught fire while left unattended in a parking lot in Woodside, California. At the time of the incident, Fisker confirmed that one of its Karmas did catch fire and that the damage was limited to an area away from the car’s lithium-ion battery and electric motors.

Now the automaker has revealed that it’s started a preliminary examination into the matter and is working with independent investigators from Pacific Rim Investigative Group. Part of the examination will include conducting tests on the burnt Karma from the weekend incident.

A cause of the fire is yet to be determined though Fisker states that evidence revealed thus far supports the fact that it wasn’t due to the car’s lithium-ion battery, electric control technology or unique exhaust routing. The exhaust system for the Karma’s gasoline range-extender is contained in the front section of the car and was suggested by many in the media as being a likely cause of the Woodside fire.

Fisker says the area of origin for the fire was outside the engine compartment, and that there was no damage to the passenger compartment and no injuries.

Fisker is continuing its investigation and plans to release a detailed report on the matter following its completion.

Note, this is the second time that a Fisker Karma has succumbed to fire. The first happened in May of this year when one of the cars was involved in a fire in the garage of a home in Fort Bend County, part of the Houston-Sugar Land-Baytown metropolitan area in Texas. The cause of the previous fire was undetermined.