A man has been arrested outside Buckingham Palace in London, England, for allegedly assaulting two police officers.
Metropolitan Police tweeted that officers are at the scene of the incident. Two officers suffered minor injuries while detaining the man and were treated at the scene, police said. The man was in possession of a large knife, police said.
The man has been arrested on suspicion of grievous bodily harm and assault on police. The man was taken to a hospital for treatment.
The queen was not at Buckingham Palace at the time of the incident.