STANDISH – Investigators are looking into what caused a three-alarm fire that destroyed a home in Standish on Saturday.

Two firefighters injured by a collapsing chimney were  treated at a hospital and released, said Standish Fire Chief Brent Libby. In addition, a pregnant woman who was in the house when the fire began was taken to hospital as a precaution and released, he said.

Libby said the fire began around 4:40 p.m. and is believed to have started on the rear porch, where someone was cooking on a grill.

It took firefighters more than four hours to bring the fire at 9 Angelwood Drive under control. Because the home was located in a rural part of town, water had to be brought in by truck, Libby said.

He said 10 communities dispatched tank trucks to the scene to help bring water to the scene. Mutual aid was provided by firefighters from Windham, Buxton, Gorham, Limington, Bridgton, Hollis, Sebago, Baldwin, Raymond and Cornish.

“It was a very difficult fire to bring under control,” Libby said. “The house was a total lost. They will have to rebuild.”