Detectives from the Homicide and Major Crime Command continue to investigate the fatal stabbing of a 29-year-old man in Fulham.
A murder investigation has been launched and police are urging witnesses and those with information to get in touch with investigators.
DCI Glen Lloyd is leading the investigation. He said: "This murder investigation continues apace. Police work at the crime scene is ongoing. Active enquiries are in hand.
"We are appealing for information from those who were out and about in the area at the time of the attack and saw anything of note. My team is particularly keen to trace a light skinned black male, approximately 6ft tall who was seen near the scene at the time of the incident. Did you see him? Do you know who he is? Anyone with information on his identity or whereabouts is urged to contact police."
Police were called by the London Ambulance Service at 00:27hrs on Saturday, 16 March to Gowan Avenue, junction with Munster Road SW6, following reports of a fight in progress.
Officers and London Ambulance Service attended.
A male, aged 29, was found suffering from stab wounds. He was initially tended to by members of the public. He received further treatment from medical professionals but despite their efforts, he was pronounced dead at the scene at 00:56hrs.
His next of kin have now been informed.
A post-mortem examination will take place in due course. Formal identification awaits.
A crime scene is in place and officers are working to establish the full circumstances of what took place.
Enquiries including forensic analysis and the review of local CCTV footage at the time of the incident continue.
At this early stage there have been no arrests.
Any witnesses, or anyone with information, is asked to call the police incident room on 0208 358 0100. To remain anonymous, call Crimestoppers on 0800 555 111. You can also tweet police via @MetCC
Young people who have information about violence or knife crime can visit http: www. fearless.org where they can pass on information anonymously. Fearless is part of the Crimestoppers charity, and is also independent of the police.
If you need help or information to support someone you suspect is involved in knife crime, or you want assistance yourself, then you can visit www.knifefree.co.uk or LondonNeedsYouAlive.