SACRAMENTO -

It wasn’t the red hot deals that brought firefighters to a Sacramento Nissan Dealership early Thursday morning.

Initial reports said one car was on fire, but eventually three Nissans caught fire and a fourth was damaged from heat exposure.

Fifteen-foot flames were seen in the dealership parking lot on Auburn Boulevard near Fulton Avenue around 4 a.m.

Investigators are not sure of the exact cause of the fire, but said it was extremely suspicious the cars caught fire so early in the morning.