A residential fire in Spanish Fork displaced a mother and three children early Sunday.

SPANISH FORK — A fire of unknown origin gutted a house at 345 N. 200 East early Sunday, displacing a mother and three children.

The fire apparently started in the kitchen of the house, possibly ignited by a free-standing heater. However, the cause of the fire remains under investigation, said Spanish Fork Police Lt. Matt Johnson.

“It appears the fire engulfed the entire residence and the residence is a total loss,” Johnson said.

The family went to a neighbor’s house to call dispatchers after their house had filled with smoke about 2 a.m. Sunday. Once police arrived, officers evacuated residents of three neighboring homes.

The homeowner, Christina Cook, was treated for smoke inhalation at the scene, Johnson said. The children, 14- and 12-year-old boys and a 10-year-old girl, were unharmed. They are staying with family but receiving assistance from the Red Cross, according to the agency.

Local fire officials were working with the state fire marshal to determine the cause of the fire, Johnson said.

— Marjorie Cortez