PARK CITY — A historic mansion in the city's old town district was severely damaged in an early morning fire.

The blaze was reported about 6:15 a.m. Friday. When firefighters arrived at the home at 713 Norfolk Ave., Park City Fire Capt. Bob Evans said the fire was fully involved.

"It's an old mansion with a servant's quarters behind it," Evans said. "The servant's quarters looks like where the fire originated."

That building and a nearby shed were destroyed in the fire. The roof of the mansion collapsed, and a neighboring home and another building sustained flame damage. The fire also destroyed vegetation up the mountainside until it was stopped at a private driveway.

The fire is under investigation. No cause has been determined.