Mystery has shrouded the unexplained deaths of an enormously wealthy Canadian couple, who gave away much of their fortune from a generic drug business.

The bodies of the couple, Barry and Honey Sherman, were found Friday inside their mansion in an upscale neighborhood of northern Toronto.

Aside from describing the deaths as “suspicious,” the police in Toronto offered little information. Brandon Price, a homicide detective, told reporters that investigators were not “currently seeking a suspect,” a statement he said had been made to “alleviate some of the concerns in the neighborhood.”

Emergency workers were summoned shortly before noon on Friday to the couple’s mansion in response to a 911 call, which Canadian news outlets said had been placed by a real estate agent.