Canadian police are investigating the mysterious deaths of pharmaceuticals billionaire Barry Sherman, founder of Apotex Inc., and his wife, Honey, whose bodies were found in their Toronto mansion on Friday.

Authorities were conducting post-mortem examinations on Saturday and treating the deaths as suspicious. A Toronto Police spokesman said that nothing had been ruled out in the probe.

Two Canadian newspapers reported that police were investigating the deaths as a possible murder-suicide, citing unidentified police sources.