A policeman is said to be seriously injured after being stabbed in the exchange London early this morning.
The Metropolitan Police said two male officers were attacked in Leicester Square and both were injured and taken to hospital.
Video showed the busy square cordoned off with a large police presence.
The Metropolitan Police said: ‘Friday 16 September around 06.00 the police met a man with a knife in the area of Leicester Square.
– Two officers suffered stab wounds and are now being treated in hospital. We await further updates on their conditions.
“Tasers were deployed and a man was arrested on suspicion of grievous bodily harm and assaulting an emergency worker.
– He was taken to hospital for treatment, where he is now.
“Investigations into the circumstances surrounding the incident are ongoing.”
It happens during a massive police operation in London in preparation for the Queen’s funeral on Monday.
More than 10,000 officers are believed to be on duty in the capital at the moment, with large crowds turning out to see the Queen lie in state at Westminster Hall.
World leaders will arrive this weekend for the funeral service on Monday, including US President Joe Biden and Japan’s Emperor Naruhito and Empress Masako.
Mayor of London Sadiq Khan said: “This attack on off-duty police officers in Soho overnight is absolutely appalling.
“These brave officers did their duty and helped the public at this momentous time for our country.
“My thoughts and prayers are with them, their loved ones and police colleagues after this shameful attack.
“Our police officers run into danger to protect others and keep us safe, and we owe them a big thank you.
“I have spoken to the new commissioner Sir Mark Rowley about this terrible incident and am in close contact.
“Attacks against the police will not be tolerated, and any perpetrators will be caught and prosecuted. I urge anyone with information to come forward to ensure that the perpetrator of this disgusting attack feels the full force of the law.’
This is news, more coming soon… Check back soon for further updates.
Do you have a story? Get in touch with our news team by emailing us at email@example.com. Or you can submit videos and photos here.
For more stories like this, check out ours news page.
Follow Metro.co.uk on Twitter and Facebook for the latest news updates. You can now also have Metro.co.uk articles sent straight to your device. Sign up for our daily push notifications here.