Emergency crews responded to a house fire in Great Falls on Sunday. The fire was reported just after 6 a.m. on the 1200 block of Eighth Avenue NW. Great Falls Fire Rescue said in a news release that fire caused significant damage, resulting in the home being uninhabitable. All three occupants made it out of the structure and were taken to a hospital for evaluation. The American Red Cross was contacted and is assisting the occupants. GFFR is investigating to determine the cause of the fire.