(CNN) -- Authorities in Ottawa, Canada, have made two terrorism-related arrests, a spokesman for the Royal Canadian Mounted Police said Wednesday.
Sgt. Marc Menard, an RCMP spokesman, said the suspects were arrested under Canada's Anti-Terrorism Act, which passed in 2001. Their names and the charges they face will be spelled out in a news conference to be held at 1 p.m. Thursday.
U.S. authorities are aware of the arrests, and there are no related arrests in the United States, a federal law enforcement official told CNN. The official said there is no clear link between the Canadian suspects and the United States.
U.S. counterterrorism officials said they believe the arrests to be an internal Canadian matter.
CNN's Jim Barnett, Meg Miller and Pam Benson contributed to this story.