SWANZEY — Two fires at the Cheshire Fairgrounds early this morning — one in a dump truck, the other in a barn — are under investigation.

At about 1:50 a.m., a caller reported a dump truck on fire in the upper parking lot off Safford Drive, according to Swanzey Fire Chief Norman W. Skantze.

The fire took about 20 minutes to extinguish and the truck is a total loss, according to Skantze.

After the fire was put out, firefighters noticed a second fire in the barn stalls at the far end of the fairgrounds. Skantze said he called a second alarm as he and the other Swanzey firefighters went to contain the blaze.

The complex was part of three units used primarily during the Cheshire Fair as cattle stalls, according to Skantze.

Only two stalls out of the roughly 400 feet of building were burned and firefighters were able to keep the flames from spreading to the two other nearby units, according to Skantze.

“I would call this a total save,” he said.

The cause of the fire remains under investigation and Skantze said no other information was available this morning.

Jori A. Johnson, general manager of the fairgrounds, said the state Fire Marshal’s Office would be at the site later today.

Johnson confirmed the fire would not disrupt the schedule of the Cheshire Fair, which is set for Wednesday, July 29, through Sunday, Aug. 2.

Four other departments assisted with the barn fire: Keene, Richmond, Troy and Winchester. The Swanzey Police Department was also on scene and will be assisting with the investigation, according to Skantze.

Chesterfield, Marlborough and Spofford fire departments covered the stations for the departments on scene.

Melissa Proulx can be reached at 352-1234, extension 1409, or mproulx@keenesentinel.com. Follow her on Twitter @MProulxKS.