MAGNA — Investigators say a house fire here Thursday was intentionally set.

Just before noon, a contractor in a new subdivision under development noticed smoke coming from a house near 7550 West and 2700 South. The home had just been completed, and the owner was expected to move in sometime in the next few days, said Unified Fire Authority Capt. Jay Torgersen. The house was one of the first completed in the new neighborhood.

Firefighters originally called for a second alarm but canceled the assignment just as they got there. Crews needed about 15 minutes to bring the fire under control. Damage was estimated at $150,000.

Arson-sniffing dogs were later brought into the house and at least two of them detected accelerants used in the same area, Torgersen said. Because no one was living in the house, investigators believe the fire was intentionally set. A person could have entered the house by lifting the garage door, Torgersen said.

Anyone with information on the fire can call the Salt Lake Arson Task Force tip line at 877-572-7766.