LINCOLN, Maine — The Maine State Fire Marshal’s Office is investigating a fire that heavily damaged a house on Transalpine Road on Monday but hasn’t yet drawn any conclusions, Fire Chief Phil Dawson said Tuesday.

An investigator from the office visited the house at 345 Transalpine Road after three area fire departments doused the flames early Monday evening and revisited the scene on Tuesday, Dawson said.

The heavy damage and large amount of debris at the scene have not yet allowed investigators to determine the cause of the fire or whether it was of suspicious origin, Dawson said.

“In cases like this, when there is a heavy amount of damage, we will investigate fires” per standard procedure, Dawson said.

No one was home when the 911 call regarding the fire came in to Bangor’s Penobscot Regional Communication Center shortly after 5 p.m. on Monday, Dawson has said.

Howland, Lincoln and Mattawamkeag firefighters fought the fire. The flames did significant smoke and heat damage throughout the house but failed to penetrate the home’s roof or outer shell, meaning that the house is probably salvageable.

Firefighters closed the road to fight the fire, causing a traffic jam on Transalpine that stretched northwest for about a half mile beyond Rocky Brook Road. Firefighters said they rescued two dogs, the only occupants of the home at the time of the blaze, without any problems.

Tests on wiring pulled from the house will probably take weeks to complete, officials said.