SULLIVAN COUNTY, Tenn. -

Sullivan County dispatchers tell us crews responded to a call on Gray Street shortly after 11 Monday night.

According to fire crews, an outbuilding caught fire, which then caught a house on fire.

We're told firefighters arrived in time to save the house and the fire was not able to cause interior damage. The outbuilding was a total loss.

Firefighters say no one was hurt in the fire.

While fire crews tell us outbuilding did have working electricity, the cause of the fire remains under investigation as of Tuesday morning.