Saskatoon police are advising the public of a dangerous synthetic drug being sold in the city as Oxycontin 80.

Investigators believe the recent overdose deaths of two men in their 20’s were caused by the pills. The two men died one day apart, but were known to each other.

Police have seized some Oxycontin 80 pills and are now trying to determine if they are counterfeit — but police believe the pills on the street are counterfeit.

The pills are described as round convex shape, blue/green in color with the number “80” on one side and the letters “CDN” on the other.

Police say, instead of Oxycontin, the pills may contain unknown deadly ingredients.

Anyone with information regarding the origin of these pills is asked to contact the Saskatoon Police Service or Crime Stoppers.