London Metropolitan Police have arrested an armed man outside the Houses of Parliament Thursday just one month after a terrorist attack left five people dead, including a police officer, and forced the closing of chambers for United Kingdom lawmakers.
Police arrested the suspect in the iconic Westminster road of Whitehall.
Asked if the suspect was waving knives, acting aggressively or shouting, the witness said: "No".
He was held on Thursday afternoon following a stop and search as part of an ongoing operation, said police.
London Metropolitan police said on Twitter that the man had been arrested as the city's traffic authorities confirmed that the Whitehall-Parliament Street is closed northbound due to a "police incident".
Mayor of London Sadiq Khan thanked the officers involved and said he had been briefed by the Met Commissioner.
Officers shut down the roads around Whitehall as they carried out the arrest, pushing the man to the ground before holding him at the scene. Police said the incident is being investigated as "terrorism". London police say they have arrested a man for possession of offensive weapons near Britain's Houses of Parliament. He said police "looked like they were tending" to him, adding: "He was arrested". He had police pointing arms at him though'.
Photos that are circulating on social media show two knives and a backpack lying on the ground at the scene.
According to the statement, there is no immediate threat and the investigation is ongoing. 'The Prime Minister has been informed by officials and she will be updated, as usual for incidents like this'.
Thursday is Parliament's last sitting day before Britain's June 8 election.
The incident comes just over a month after a man drove a auto into pedestrians on nearby Westminster Bridge killing four people before stabbing to death a police officer in the grounds of parliament. He was shot dead by police.
Britain also faces a threat from worldwide terrorism classified as "severe", meaning an attack is highly likely.