A man has been detained by armed police outside the Palace of Westminster.
A bearded man, wearing black trousers and a grey sweatshirt, was seen being held against the fence with his arms behind his back by a police officer.
The incident is not thought to be terror related. The Carriage Gates entrance to Parliament is closed.
Joe Murphy, political editor of the Evening Standard, tweeted that there were shouts of “knife knife knife” and a man was brought down with a Taser.
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