A man is in a critical condition in hospital after being stabbed in a north London street.
The victim, who police said is in his 20s, was attacked at about 2.30pm this afternoon in Horsell Road, Islington.
Pictures on Twitter show London's Air Ambulance landing close to where the incident took place and paramedics working on the pavement.
<blockquote class="twitter-tweet" data-partner="tweetdeck">Stabbing incident just now off Holloway road, Drayton Park. Islington. Ambulance have just taken the injured. <a rel="nofollow" target="_blank" href="https://www.awin1.com/awclick.php?mid=9&id=222025&p=http://t.co/V6tjegWOta" class="body-link" data-vars-item-name="BL-236091-http://t.co/V6tjegWOta" data-vars-event-id="c23">pic.twitter.com/V6tjegWOta</a>— Havva Murat (@Havva_Murat) <a rel="nofollow" target="_blank" href="https://twitter.com/Havva_Murat/statuses/474192273727447041" class="body-link" data-vars-item-name="BL-236091-https://twitter.com/Havva_Murat/statuses/474192273727447041" data-vars-event-id="c23">June 4, 2014</a>
A spokesman for the London Ambulance Service (LAS) said they sent an ambulance, a single responder in a car, a duty officer and London's Air Ambulance to the scene and took the man to an east London hospital.
Motorists are being advised to avoid the surrounding roads.
Officers from Islington police have cordoned off Holloway Road at the junction with Palmer Place.
No arrests have been made and enquiries are ongoing, Scotland Yard said.
Anyone with information should call police on 101.
