OTTAWA - The Ontario fire marshal and the Ottawa police arson unit have been called in to investigate a fatal fire.

Firefighters were called just before 10 p.m. Saturday night and told flames were shooting out the front windows and door of a single family bungalow at 1140 Shillington Avenue.

Upon arrival crews found two injured men in their 50s outside the home and quickly determined that a woman in her 80s was still inside the blazing residence.

Firefighters say they found the women in the living room with severe burns to her body and brought her outside to be treated by paramedics, but she was pronounced dead at the scene.

Witnesses indicated that one of the two men was the woman's son and that he'd tried to rescue her himself but the smoke and flames foiled his attempts.

Police issued a statement this morning that one of the occupants of the home had died and that two others remained in hospital with undetermined injuries. No names have been released.