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Police injured outside Buckingham Palace Police injured outside Buckingham Palace
(35 minutes later)
Two police officers have been injured while arresting a man armed with a knife outside Buckingham Palace.Two police officers have been injured while arresting a man armed with a knife outside Buckingham Palace.
The officers were treated at the scene for minor arm injuries and were not taken to hospital, the Metropolitan Police said.The officers were treated at the scene for minor arm injuries and were not taken to hospital, the Metropolitan Police said.
The force said the man was stopped outside the royal grounds. He has been arrested on suspicion of grievous bodily harm and assault. The force said the man, who was stopped outside the royal grounds, has been arrested on suspicion of grievous bodily harm and assault.
The police said it was too early to know whether it was terror related. It is too early to know whether it was terror related, police said.
Officers remain at the scene and inquiries are ongoing. The BBC understands no members of the Royal Family were in Buckingham Palace during the incident.
'Police seem calm' The Met would not comment on witness reports that a man was wrestled from a car by officers after appearing to drive his vehicle towards them.
One eyewitness, Nicole Kyle, was walking home when she saw police head towards Buckingham Palace. Kiana Williamson said: "They were trying to get the man out of the car, shouting, more police were arriving on to the scene and the man was fighting back."
Another witness, Nicole Kyle, was walking home when she saw police head towards the palace.
The 25-year-old said: "I was walking toward The Mall and St James's Park when I saw police rush down toward the palace in great numbers.The 25-year-old said: "I was walking toward The Mall and St James's Park when I saw police rush down toward the palace in great numbers.
"As we got further down The Mall we saw armed police outside a police van, at which point we were able to walk closer to the palace still, where we were eventually stopped by a cordon."As we got further down The Mall we saw armed police outside a police van, at which point we were able to walk closer to the palace still, where we were eventually stopped by a cordon.
"All we were told was that there's been an incident. "All we were told was that there's been an incident."
"A few minutes later police came by to have us clear the area and move further away from the palace." Natalie Wood wrote on Twitter: "Police still being called into Buckingham Palace. Everything on lockdown, heavily armed police seem calm."
Another witness, Natalie Wood, wrote on Twitter: "Police still being called into Buckingham Palace. Everything on lockdown, heavily armed police seem calm."
A Buckingham Palace spokeswoman said she would not comment on security issues.A Buckingham Palace spokeswoman said she would not comment on security issues.
The area was sealed off by police, who remain at the scene and inquiries are ongoing.