RCMP are investigating the deaths of a young man and his mother on the Stoney Nakoda First Nation that officials believe could be related to the use of street drugs and non-prescribed prescription pills.

On Tuesday just before 3:30 a.m. MT a man in his 20s was found in medical distress in a field near Morley, Cochrane RCMP said. 

He died a short time later despite efforts by emergency crews to save him.

Officials believe the man had consumed street drugs as well as non-prescribed prescription pills and alcohol in the hours before his death.

Later the same day, at about 8:30 p.m. MT, the man’s mother, believed to be in her 40s, was also found in medical distress.

Family members performed CPR but she died within the hour, officials said.

Pills were found at the scene, leading investigators to believe the woman had consumed non-prescribed prescription drugs.

"This is the first time in my 11 years of experience that I've seen a situation where a mother and son have both passed away in the same day due to essentially ingesting pills," said Const. Ryan Gervais.

"At this point we do not believe that the pills were tampered with. But we are sending the pills away to be tested."

Autopsies will be done early next week for both victims, whose names were not released.