The Ottawa police arson unit is helping investigate a fire that destroyed five cars parked outside a high-end auto dealership in south Ottawa early Tuesday morning.

No one was injured in the fire near the service garage at Otto's BMW at 660 Hunt Club Rd., west of Uplands Drive.

Firefighters received two 911 calls just before 4 a.m., according to a news release.

Firefighters got the blaze under control by 4:15 a.m. and protected the nearby garage from serious damage.

A fire investigator is working to determine the cause of the fire. (Giacomo Panico/CBC)

No one was in the area at the time of the fire.

The cause of the fire is still unknown.