Police are investigating the death of two people to see whether carbon monoxide poisoning was a factor.
Emergency services were called to a home on Varsity Drive N.W. around 10 p.m. MT Thursday. When they arrived, they found the bodies of a six-year-old boy and a woman.
Calgary police are calling the cause of the deaths "undetermined."
The major crimes unit has been called in to continue the investigation.
A window was broken in the home and police are questioning neighbours.