Three young men have been stabbed and a 17-year-old boy was assaulted after a fight broke out in south London in the early hours of this morning.
Police were called at 1.30am to the Bromley Common area to "reports of disorder" in Hastings Road where they found the assault victim.
Half an hour later police were called to Princes Plain where they found a 20-year-old who had been repeatedly stabbed.
At the same time, two men aged 20 and 17-years-old went to a hospital in south London with stab wounds and doctors alerted the police.
All four are now in a stable condition.
Detectives believe that two black hatchback vehicles - one of which may have been a Volkswagen Golf - are connected to the incident.
They also believe all the three stabbing and assault are linked.
So far, three people have been arrested and were taken to a south London police station.
Anyone who witnessed this incident or has information concerning the vehicles involved should call Bromley CID by dialing 101 or call Crimestoppers anonymously on 0800 555 111.