A man has died after being found collapsed outside a hospital by passing police officers.
A murder probe was launched today after the victim, aged in his 20s, died as a result of stab wounds in south London.
He was discovered outside King's College Hospital in Denmark Hill, where he was given emergency treatment but died a short time later.
He had been driven to the hospital - which is a major trauma centre in the capital - by a friend and was left outside the building just before 5am, said police.
It is believed the man was stabbed near Clapham High Street, around two-and-a-half miles away.
Detectives have appealed for anyone with information to come forward.
Formal identification of the dead man and a post-mortem examination to confirm the cause of death will take place at a later date, according to Scotland Yard.
Detective Inspector Matt Denby, of the Met Police's Specialist Crime unit, said: "Our investigation is at a very early stage, however I believe the victim was stabbed in Clapham High Street at around 4:45am on Saturday morning.
"The victim was driven to hospital by a friend, but tragically his injuries proved fatal.
"As I begin work alongside dedicated colleagues and homicide investigators, my thoughts and sympathies are with this man's family and friends.
"I can assure them of our total commitment to finding whoever was responsible and bring them to justice.
"I am appealing for any witnesses who are yet to speak with police to make contact with us and share what they saw or anything they know that may assist the investigation.
"Cordons are in place and a full forensic examination of the scene is under way. Members of the public will see officers working in the Clapham area throughout the day.
"If local people have any information or concerns, please speak with those officers."
Anyone with information can call officers on 101 and quote reference 1230/10dec or to remain anonymous by contacting Crimestoppers.
