GREAT FALLS, Mont. (AP) — Cascade County fire investigators are trying to determine the cause of a trailer house fire that killed one person.

Sheriff Bob Edwards says the fire was reported at about 2 a.m. Monday and the house was fully engulfed when deputies arrived.

Human remains were found in the residence after the fire was extinguished. The remains were being taken to the state crime lab in Missoula for an autopsy and positive identification.

Edwards says no foul play is suspected.