LONGMONT, Colo. (CBS4) – A fire destroyed a barn in Longmont, the fire officials said.

The fire started around 1 a.m. near Elmore Road and Highway 66.

Mountain View Fire Rescue said no people or animals were inside the barn before the fire.

Crews said they had a hard time putting out the flames because propane tanks were inside the barn.

(credit: Mountain View Fire Rescue)

(credit: Mountain View Fire Rescue)

Fire investigators believe the possible area of origin has been narrowed to the roof and attic area. Investigators do not suspect arson.

The estimated loss is $1.1 million.