The Canadian Broadcasting Corporation is reporting that Canada allowed the U.S. National Security Agency to conduct widespread surveillance during the 2010 Group of 8 and Group of 20 summits in Toronto.
The report cites documents from former NSA contractor Edward Snowden, who is wanted by American authorities on espionage charges.
The CBC report says the U.S. turned its Ottawa embassy into a security command post that spied during the summits with close coordination with its Canadian intelligence partner.
That partner, the Communications Security Establishment Canada, cannot target anyone in Canada without a warrant. CSEC spokespeople have told reporters the agency cannot ask international partners to act in a way that circumvents Canadian law.
The CBC report is the latest to emerge from documents leaked by Snowden. Revelations that the agency spied on close allies such as Germany and Brazil have prompted protests to Washington.
Some infprmation for this report was provided by Reuters.