Nishnawbe-Aski Police say investigators have recovered a body after a house fire in Fort Severn First Nation that occurred in the remote northwestern Ontario community on Monday.

They say a post-mortem will be conducted Thursday in Kenora, Ontario.

Fort Severn Chief Joe Crowe said his community is grieving, and crisis teams have been sent in from two other First Nations: Big Trout and Peawanuck.

Police said the fire broke out at about 5 a.m. Monday, and several people managed to escape, leaving one individual unaccounted for.

Chief Crowe said the community doesn't have firefighters, but when two community workers tried to connect a hose to a nearby hydrant it turned out to be frozen.

The Ontario Fire Marshall and Ontario Provincial Police forensic identification unit arrived in Fort Severn First Nation last night to investigate.

Police said their arrival was delayed by the weather.