Three people are now in serious condition following a house fire near Erin Mills Parkway and Britannia Road.
Two adults and a child have who were inside the home Scarth Court have all been sent to hospital.
Peel Police say they were called to the scene just before 1 a.m.
There are reports that all three people are now suffering from smoke inhalation.
Investigators are now trying to figure out what caused the blaze which broke out just after midnight on Thursday morning.