MA -An explosion destroyed a small house on property owned by the Edaville Railroad, and Carver fire officials focused their investigation on the home’s propane tank.

The cottage-like home on Eda Avenue exploded at about 9:20 a.m. Two brothers who were renting it weren’t home at the time, fire officials said.

“Everything was off. We got up this morning, got dressed and went to work,” Steve Monahan, who lived with brother, Robert, told reporters at the scene.

There is no gas service to that area, according to NStar, which provides gas service to other parts of Carver.

Fire officials said they’re focusing on the above-ground propane tank that supplied the home. Investigators prodded the tank amid the debris.

“It went down in one shot,” said Jennifer Caswell, who lives nearby and heard a “boom” as her home shook. “I walked out the door, and it was already on fire. It was all on the ground.”

Caswell said the homes on Eda Avenue are owned by Edaville Railroad, a children’s theme park featuring train rides. The company’s manager, Brenda Johnson, did not immediately return a call to comment.