A fire in Limington early Thursday morning destroyed a house on Doles Ridge Road and sent a woman to Maine Medical Center with severe burns, a fire official said.

Limington Fire Chief Mike Hartford said a woman and her 4-year-old son escaped the blaze, but the woman was badly burned. The woman and her son are relatives of the Limington assistant fire chief, who was the first to arrive on scene.

“She heard the child scream, and made a couple attempts to get the child out,” Hartford said.

State fire investigators spent six hours combing through the fire’s debris, but could not pinpoint a cause. Hartford said the fire is not believed to be suspicious.

Crews were first dispatched to the address at 8:57 p.m., and two minutes later, the assistant chief arrived to find his relative outside and flames shooting through the home’s roof.

The log cabin-style home burned exceptionally fast because its interior walls were covered in varnish, Hartford said.

About 12 minutes after the first call went out, the first fire truck arrived. Crews from four surrounding towns eventually helped put out the blaze, working for 55 minutes to contain the fire.

The home was destroyed, he said. The woman was listed in stable condition at the Portland hospital on Thursday morning, and is expected to recover.