Updated: 3:30 p.m.
The tenant who made the initial call to 911, Amanda Savard, told Sudbury.com she knew something was wrong when she saw smoke coming through her living room window.
As soon they saw smoke billowing from the upstairs apartment, Savard and her partner exited the building and called police.
Originally described as a triplex, the building is actually made up of two one-bedroom apartments, one of which was the source of the fire, and a small studio near the rear of the building.
Savard described the two victims, ages 27 and 40, as “really nice people ... best friends,” who lived there with their five cats, all of whom she believed died in the fire.
Savard said she met the man and woman when she moved into the building April 1; her first apartment as an expectant mother.
Updated 11:30 a.m.
The structure fire that occured at 325 Montague Ave. early Saturday morning was contained fairly quickly, said Greater Sudbury Fire Services Platoon Chief Andre Groulx.
The fire was contained to the apartment where the fire started, which claimed a life and has left another person in a Toronto hospital with critical injuries. The blaze also caused an estimated $80,000 damage.
The initial call to 911 is believed to have been made by someone one of the building's lower units, which have been evacuated until further notice.
No other businesses or neighbours appear to have been affected.
At approximately 12:08 a.m. this morning, Greater Sudbury Fire Services responded to a structure fire at 325 Montague Ave.
The fire originated from one of the three units of the triplex, of which two residents were located inside.
One individual has passed away as a result of the incident, while the other has been taken to Sunnybrook Hospital in Toronto with critical injuries.
The names, genders, ages or extent of the victim's injuries have yet to be released.
The Greater Sudbury Police Service Criminal Investigations Division and the Office of the Ontario Fire Marshal are conducting a joint-investigation into the incident.
This story will be updated as information becomes available.