Jim Judd, the head of Canada's spy agency, is resigning after four years, according to a report late Tuesday.

Judd, 61, will leave his post at the Canadian Security Intelligence Service in June, government sources told the Globe and Mail.

The career bureaucrat has been in the public service for 36 years. Before he was appointed to a five-year term at CSIS in 2004, he was secretary of the Treasury Board.

He has also worked at the departments of Defence and Foreign Affairs, occupying senior positions in both.

Judd's resignation comes at a time when CSIS is heavily involved in preparing for security for Vancouver's 2010 Winter Olympics, and intelligence gathering in Afghanistan.