Police and the Medical Examiner have linked a seventh death to PMMA after the substance was identified in toxicology tests.

A man in his 20s was rushed to hospital from a residence in the 1300 block of 16 Ave. N.W. on Saturday January 21, 2012.

An autopsy was conducted and toxicology results have since confirmed the presence of PMMA.

Police are still looking into a suspected overdose on the weekend as well as another incident involving two women from Edmonton.

Police were called to a home in the 0-100 block of Falsby Place N.E. on Sunday, January 29, 2012 for reports of a man in distress.

The 37-year-old man was pronounced dead at the scene and another man and a woman were transported to hospital.

Police seized a variety of drugs from the residence and sent samples to the crime lab for testing.

Police are awaiting the results of an autopsy to confirm the cause of death in that case.

Two women in their 20s from Edmonton were also taken to hospital following suspected drug use at a downtown hotel.

The women were visiting Calgary over the weekend and police were called in when one of the women found the other passed out in their room.

One woman was treated and released; the other was admitted and is in stable condition.

Investigators are working to follow-up on a number of leads to determine the source(s) of the drugs containing PMMA.

Anyone with information is asked to call the Calgary Police Drug Tip Line at 403-428-8100 or Crime Stoppers anonymously using any of the following methods:

TALK: 1-800-222-8477
TYPE: tttTIPS.com
TEXT: tttTIPS to 274637