The RCMP has executed two arrests in Kingston in what the government official confirms is a national security investigation.
RCMP said on Thursday night through Twitter that "all action is being taken to ensure public safety" and more information will be provided on Friday.
A senior government official who spoke in the background confirmed that arrests are related to a national security investigation.
An official who does not want to be identified as the investigation is in its infancy states that the situation is "detained" and that there is no threat to public safety.
The RCMP said they "worked closely" with the Kingston police, calling it "an ongoing and evolving situation."
Public Security Minister Ralph Guale said that all operational details of the RCMP investigation will be published by the Mounties, adding that the country's security agencies act on reliable information about potential threats.
"The Government of Canada has no more responsibility than to keep its citizens safe. Earlier today, the RCMP and other police partners took action in Kingston, Ontario, based on credible information to ensure public safety, "Mr Goodale said in a statement.
"The Government of Canada constantly monitors all potential threats and has strict measures to deal with. Canadians can be confident that when reliable information on a potential threat is obtained, the RCMP, CSIS and other police and security agencies take appropriate steps to ensure the security of this country and the safety of its citizens. "
Mr. Goodale said the official threat level in the country remains "average". It is at this level since the fall of 2014.