A man was arrested on suspicion of possessing a knife near British Parliament Friday, London police said, after a large police response in the heart of the nation's capital.
The incident took place before noon, local time, a London Metropolitan Police representative told NBC News. No one was injured.
Other details weren't immediately available.
The arrest comes with the nation on alert after a series of deadly attacks. In March, a man drove into pedestrians on nearby Westminster Bridge and stormed a gate at Parliament before he was shot dead. Since then, a suicide bomber attacked a concert in Manchester and several attackers left people dead on and near London Bridge in a vehicle-and-knife rampage.