LEON NEAL/AFP/Getty Images
British police prepare to lift manhole covers in central London, on May 16, 2011 following a security alert.
British police prepare to lift manhole covers in central London, on May 16, 2011 following a security alert. LEON NEAL/AFP/Getty Images
British police have received a warning of a possible bomb in central London from an Irish Republican dissident group, according to AP. There's no indication of when any possible device might explode, or where. In a statement, New Scotland Yard asked Londoners to go about their business while remaining vigilant, but added several police agencies were cooperating on the investigation.
The statement says "the threat level from Irish-related terrorism has not increased and remains at substantial".
Reuters reports police have closed a main road near Buckingham Palace, a day before Queen Elizabeth visits Ireland. Next week, President and Mrs. Obama will arrive in London for a state visit at the Queen's invitation.