The creator of Canada's intelligence service, Robert Kaplan, died Monday.
He was 75.
Interim Liberal leader Bob Rae confirmed the death on Twitter Monday afternoon.
"So sorry to advise of Robert Kaplan's passing - he was a good friend to many who contributed much to Canadian politics and public life," Rae wrote.
Kaplan, a former Toronto Liberal MP, served as solicitor general under in the 1980s under former prime minister Pierre Trudeau.
He established the Canadian Security Intelligence Service and implemented the Young Offenders Act.