THURSO--The bodies of two children have been located after a fire broke out Wednesday morning in Southwestern Quebec

A home on Lacroix St. in Thurso caught fire in the middle of the night, and was still smoking at dawn as firefighters patrolled for hot spots.

Three adults and three children managed to make it out of the home on their own and all six have been taken to hospital.

Two people, a man and his 12-year-old daughter, are in critical condition, while the other victims include the children's mother, an infant, and a six-year-old boy, along with an 11-year-old friend who was sleeping over.

Witnesses say the father climbed up onto the roof of the second floor and tried to get into upper bedrooms, but the smoke was too thick for him to get through.

Late Wednesday morning firefighters confirmed that the bodies found on the top floor of the house are those of a three-year-old girl and her eight-year-old sister.

The Surete du Quebec has been on the scene of the fire since 4:45 a.m.

Damage to the home seems quite heavy, with scorch marks on exterior walls from the ground floor all the way to the roof.

Thurso is about 120 km west of the island of Montreal.