Passengers arrive at the Heathrow Airport in London on May 27.Kin Cheung/The Associated Press
British police have arrested a Canadian man on suspicion of being a member of a terrorism group.
The Metropolitan Police in London, England say counterterrorism detectives arrested a 28-year-old Canadian national at Heathrow Airport shortly after noon.
They say the man had just arrived on a flight from Canada, and that the investigation related to the arrest hours earlier of a man in east London.
Both men stand accused of membership in a proscribed terrorism organization, which could carry a sentence of up to 14 years in prison if charges are laid.
The men are currently being held without a warrant, which can be done for a maximum of 48 hours under the U.K. Terrorism Act.
In an email, Metropolitan Police say they are not naming the terrorism group as the investigation is ongoing, and that they would only confirm the identity of the people they arrested if they are charged with an offence.