A cyclist is said to be fighting for his life after being hit by a car in a "very serious" collision in south London.
The man, whose age is not yet known, was airlifted to hospital after he was hit on Brixton Hill near the junction with Dumbarton Road.
Police were called to the scene at around 5.45pm and the driver of the car stopped at the scene of the crash.
Brixton Hill was closed both ways after the crash, but one lane had later reopened.
Witnesses to the aftermath of the collision described the scene as "horrible".
Martin Abrams tweeted: "Very serious collision between cyclist and a car on Brixton Hill. Air Ambulance just landing now. Hope the cyclist is ok."
<blockquote class="twitter-video" lang="en">Major disruption on Brixton Hill guys... <a rel="nofollow" target="_blank" href="https://twitter.com/hashtag/AvoidRoute?src=hash" class="body-link" data-vars-item-name="BL-74261-https://twitter.com/hashtag/AvoidRoute?src=hash" data-vars-event-id="c23">#AvoidRoute</a> <a rel="nofollow" target="_blank" href="https://www.awin1.com/awclick.php?mid=9&id=222025&p=http://t.co/Pd8Pz4Y66y" class="body-link" data-vars-item-name="BL-74261-http://t.co/Pd8Pz4Y66y" data-vars-event-id="c23">pic.twitter.com/Pd8Pz4Y66y</a>— #LetItGo (@SuzyQ_ueenie) <a rel="nofollow" target="_blank" href="https://twitter.com/SuzyQ_ueenie/status/582604185457287168" class="body-link" data-vars-item-name="BL-74261-https://twitter.com/SuzyQ_ueenie/status/582604185457287168" data-vars-event-id="c23">March 30, 2015</a>
He added: "Gutted to see seriously hurt cyclist on Brixton Hill following collision with a car. I cycle that road everyday it's awful."
Amy Everard posted: "Air ambulance landing on Brixton Hill. Sounds like a collision involving a cyclist. Horrible road to cycle on."
Another person posted on Twitter: "There's an air ambulance seemingly looking to land on Brixton Hill. I'm guessing there's been a crash or some kind of accident."
