TULSA, Oklahoma - Investigators are trying to determine the cause of a fire in a vacant house in North Tulsa early Friday.

Tulsa Fire got the call before 1 o'clock to a home in the 4900 block of North Boston Place.

Firefighters say flames were visible when they arrived, but they were able to put them out quickly.

No one was inside at the time.

Since there was no electric and natural gas service to the house, the fire marshal was called out to investigate.