A key informant in the arrests of 18 Toronto-area terror suspects was reportedly paid at least $500,000 for his role in the sting, according to The Globe and Mail.
Citing multiple unnamed sources, the newspaper said the man had initially asked police to pay him more than $14 million.
The mole and his family are believed to be in a witness relocation program.
Sources have said total payment could equal some $4 million when relocation costs are added up.
The Globe, which knows the identity of the police agent, is banned from revealing it.
The newspaper reports that the unidentified informant was struggling financially before he became a police agent.
Shortly after police made the arrests, he and his immediate family went missing. Members of the man's extended family have also relocated, The Globe reports, leading some to suggest they have also been moved by the state.
Mubin Shaikh -- another police agent who went public with his role in the anti-terror sting -- is on the record as saying the RCMP paid him $300,000.
Shaikh, a prominent activist in Toronto's Muslim community, has revealed that he was moved to go undercover to protect Canada and that he worked for the Canadian Security and Intelligence Service and the RCMP for more than two years.
Last June, hundreds of police officers swept across the Greater Toronto Area to round up the suspects, mostly in their teens and 20s.
The suspects were arrested last June in sweeping raids across the Greater Toronto Area.
The suspects, who are predominantly young, Canadian-born Muslims, are accused of participating in a terrorist group, receiving training in a terrorist group and planning to use three tonnes of ammonium nitrate to detonate a series of bombs in Toronto.
While alleged plots to bomb several strategic targets, storm Parliament and behead Prime Minister Stephen Harper were reported after the arrests, the evidence that prosecutors will introduce to bolster those charges is temporarily banned from publication.
