A man has suffered life threatening injuries in a stabbing outside the Home Office building in London, police say.
The Metropolitan Police were called to the area outside building in Marsham Street shortly after 1pm following a report of a man with a knife.
A man was found with knife injuries and the London Ambulance Service is currently at the scene.
His injuries are being treated is life threatening at this stage.
A man has been arrested on suspicion of grievous bodily harm and taken to a police station.
“Enquiries are ongoing into the exact circumstances of the incident,” the Met said in a statement.