Four cars were on fire in the Lawndale section of the city early Thursday morning.
Police say two of the cars were set on fire on the 500-block of Gilham Street. They say the fire spread to two other cars.
No one was injured in the fires.
The fire marshal is on the scene with dogs trying to piece together exactly what happened.
Police say the cars, a 2002 Mercury Sable, 2003 Cadillac Escalade, 2004 Ford Explorer and a 2005 Chrysler 3000, do not belong to anyone that lives on the block.
They are searching for the owners of the vehicles.
We'll keep you updated as details become available.