The arson unit is investigating a fire that broke out in Winnipeg’s North End on Thursday evening.
Firefighters were called just after 8 p.m. to 371 Mountain Avenue between Salter Avenue and Aikins Street, where a blaze had broken out in the three-story home.
Fire officials say the flames were so intense crews were unable to enter the house.
They also say there had been heavy damage from a previous fire at the same place.
There were no injuries and nobody was home at the time.
A damage estimate from the fire was unavailable.