A man has been stabbed in one of London’s busiest tourist hot spots, Trafalgar Square, on Wednesday night.
Emergency services were called to the scene at 9.11pm following reports of a knife attack, said Met Police.
The victim, who has not been identified, was found in the square suffering from stab injuries.
It is not yet known what condition he is in, added police.
Large sections of the square have been cordoned off and motorists are urged to avoid the area.
Met Police said at least five squad cars and two police vans attended the incident, as well as the London Ambulance Service.
Videos shared on social media show the square full of police cars with officers moving bystanders away.
Alexander Zakharenko tweeted some footage of the scene with the words: ‘What’s going on on Trafalgar Square…’
Another onlooker posted: ‘Something’s going down in Trafalgar Square … 8 police and ambulance. All roped off. Hope no-one badly hurt.’
Met Police said: ‘A crime scene and road closures are in place. Motorists advised to avoid the area.
‘No arrests at this early stage; inquiries continue.’
Trafalgar Square is one of London’s busiest tourist destinations and is the site of the National Portrait Gallery and St Martin-in-the-Fields church.