At the Shermans' home
At the Shermans' homeReuters

Thousands of mourners attended the funeral of Canadian billionaire and philanthropist Barry Sherman and his wife Honey Thursday.

The two were found dead in their Toronto mansion last Friday, after Barry failed to show up at his office the day before. Police called the deaths "suspicious."

Sherman, 75, was the founder of pharmaceutical giant Apotex. He founded the company in 1974 and grew it into the largest Canadian-owned drug company.

Sherman’s wife, Honey, was a member of the board of the Baycrest Foundation and the York University Foundation. She served on the boards of Mount Sinai’s Women’s Auxiliary, the Simon Wiesenthal Center and the International American Joint Distribution Committee.

The Shermans were well-respected in both the Canadian Jewish community and beyond, and were among Canada's most generous philanthropists. They made numerous multimillion-dollar donations to hospitals, schools and charities and had buildings named in their honor.

The Sherman's son, Jonathon, began his eulogy by criticizing the police handling investigation into his parents' death for making this period even more difficult for the family.

Local media reports suggested that the police were investigating the deaths as a murder-suicide, a possibility the family rejected outright.

"As my sisters and I congregated for two days waiting to hear any facts other than through Twitter and the unreliable news media, I kept expecting my parents to walk through the front door and say ‘everything will be fine, we’ve taken control of the situation.’ These last few days have been a shocking adjustment to our reality," Jonathan said.

The investigation was turned over to homicide detectives.

Thousands attended the funeral Thursday, including hundreds of Apotex employees and Canadian Prime Minister Justin Trudeau.