Armed police detain man outside UK parliament
A man has been detained by armed police outside the Palace of Westminster.
A bearded man, wearing black trousers and a grey sweatshirt, could be 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.
Scotland Yard said the man - aged in his 30s - was arrested on suspicion of possessing a knife.
There are no reported injuries.