11/27/2013 11:09 EST | Updated 01/28/2014 05:59 EST

Tory Government Allowed U.S. Spying At Toronto G20 Summit: CBC Report

TORONTO, ON - JUNE 27: World leaders pose for a group photo during the G20 summit June 27, 2010 in Toronto, Ontario, Canada. The leaders in attendance include U.S. President Barack Obama, Canadian Prime Minister Stephen Harper, French President Nicolas Sarkozy, German Chancellor Angela Merkel, Italian Prime Minister Silvio Berlusconi, British Prime Minister David Cameron, Japanese Prime Minister Naoto Kan, European Council President Herman Van Rompuy, European Commission President Jose Manuel Barroso, Ethiopian Prime Minister Meles Zenawi, Chinese President Hu Jintao, Indonesian President Susilo Bambang Yudhoyono, Malawian President Bingu Wa Mutharika, King Abdullah of Saudi Arabia, Mexican President Felipe Calderon, Argentinean President Cristina Fernandez de Kirchner, South Korean President Lee Myung-bak, South African President Jacob Zuma, Netherlands Prime Minister Jan Peter Balkenende, Turkish Prime Minister Recep Tayyip Erdogan, Spanish Prime Minister Jose Luis Zapatero, Indian prime minister Manmohan Singh, Vietnamese Prime Minister Nguyen Tan Dung, Australian Treasury Secretary Ken Henry, Russian President Dmitry Medvedev, United Nations Secretary-General Ban Ki-Moon, International Labour Organization Director General Juan Somavia, World Bank President Robert Zoellick, International Monetary Fund Managing Director Dominique Strauss-Kahn, Organization for Economic Cooperation and Development Secretary General Angel Gurria, World Trade Organization Director General Pascal Lamy and Financial Stability Board Chairperson Mario Draghi. (Photo by Sasha Mordovets/Getty Images)
TORONTO - The United States reportedly conducted widespread surveillance while world leaders were gathered in Toronto for the G20 summit in 2010 and that Canada knew about it.

CBC's The National reported Wednesday on documents it said were leaked by U.S. whistleblower Edward Snowden.

The national broadcaster said the briefing notes show Canada allowed the National Security Agency to conduct the operation out of its Ottawa embassy during the the 2010 G8 and G20 summits.

The report said one briefing note describes the NSA plans and said they were "closely co-ordinated with the Canadian partner." Canada's counterpart is Communications Security Establishment Canada.

There's no word on specifics of the spying operation. The documents describe part of the mandate as "providing support to policymakers."

A spokesman for Prime Minister Stephen Harper said the government would not comment on "operational matters related to national security."

"Our security organizations have independent oversight mechanisms to ensure that they fulfil their mandate in accordance with the law," Jason MacDonald said in an email to The Canadian Press.

A spokeswoman for Communications Security Establishment Canada said it could not comment on the operations of Canada or its allies.

"Under the law, CSEC does not target Canadians anywhere or any person in Canada through its foreign intelligence activities," the spokeswoman, Lauri Sullivan, told The Associated Press. "CSEC cannot ask our international partners to act in a way that circumvents Canadian laws."

Past documents leaked by Snowden revealed Canada had hacked into phones and computers in Brazil's department of mines.

_ With files from The Associated Press.

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