A 57-year-old woman is fighting for her life in hospital after she received second-degree burns to 40 per cent of her body when a fire broke out in her second-floor apartment in Ottawa's Wellington West neighbourhood.

Firefighters rescued the woman from her unit at 14 Julian Ave., near Wellington Street. They were called to the home at about 6 a.m. Thursday.

The woman suffered burns to her torso, legs and arms. She was taken to the trauma unit of the Ottawa Hospital where she was listed in critical condition.

"There's two apartments. There's one on the main floor, and there's one on the second floor," said fire spokesperson Marc Messier.

"The fire started in the living room of the second floor apartment where the woman lived."

A 46-year-old male was also taken to hospital to be treated for smoke inhalation. He is in stable condition.

Three others were also injured. They were treated for minor smoke inhalation by paramedics at the scene.

One of those injured was a neighbour who ran into the burning home to make sure everyone got out.

"There was no lights. It was dark. There was a flaming pile of debris in the middle of the living room that I couldn't get past. I was in my bare feet," said neighbour Ian MacLeod.

The cause of the fire remains under investigation.

With a report from CTV Ottawa's Norman Fetterley