A Thunder Bay man was seriously injured in a fire on the city's north side this weekend, and the Ontario Fire Marshal's office has been called in to investigate.

A neighbour called 911 Friday afternoon to report smoke coming from the kitchen window of a home on Strand Avenue.

When firefighters arrived at 4:19 p.m., they discovered that a "possible explosion" had occurred in the kitchen of the one-storey home, according to a news release.

The incident was quickly contained, and the lone male occupant of the house was taken to the Thunder Bay hospital by ambulance. He was later transferred to the burn unit at Sunnybrook Health Sciences Centre in Toronto. As of Saturday afternoon, a fire service news release reported his condition as "good-to-fair."

The fire caused only minor smoke damage to the home, but the Ontario Fire Marshal's office will investigate because of the serious injuries the man suffered. An investigator was expected to arrive Saturday afternoon.