A 93-year-old woman, who was found frozen to death outside of her Montreal nursing home Sunday, is the mother of Canada's former Bloc Quebecois leader Gilles Duceppe, according to CTV.

The woman, Helene Rowley Hotte, was locked out of the Lux Governor Residence in Montreal's east end after an alarm was triggered at 4:15 a.m. local time Sunday. At that time, it was about -20 degrees Celsius outside as a severe winter snow storm was hitting the city.

Her body was discovered in the snow just outside the building more than 7 hours after the alarm went off.

Police said the death was not a criminal case and would be handled by the coroner's office.

According to the Montreal fire department, 100 people were forced to leave the residence when carbon monoxide was detected. They were brought back into the building by 6:20 a.m.

Duceppe, a longtime politician, was the leader of the Bloc Quebecois for 15 years in three separate stints. Bloc Quebecois is a federal political party in Canada.