A teenager who was stabbed to death in North Acton has been named as Khalid Safi.
The 18-year-old from Southwark was killed after a knife pierced his heart during a fight on Victoria Road on Thursday (December 1).
A post-mortem examination held at Uxbridge Mortuary the following day gave cause of death as a stab wound to the heart.
Police believe the deceased had links to Wembley , Peterborough and Walsall.
A murder investigation was launched following the fight outside the University of the Arts halls, just after 6.30pm on Thursday (December 1).
Emergency services including the police officers and London Ambulance Service attended the scene.
They found Khalid suffering from stab injuries and he was taken to a west London hospital where he died a short time later.
Next of kin were informed.
Detectives have made a specific appeal for witnesses including the driver of a silver or light coloured Mercedes Vito people carrier or similar.
It is believed to be a minicab, which pulled up outside the Holiday Inn on Victoria Road at around 6.30pm.
Detective Chief Inspector Sam Price, who is leading the investigation for the Homicide and Major Crime Command, said: "There were a lot of people in the area of Victoria Road at the time of the incident and whilst we have spoken with the woman we had previously appealed for, I believe that not everyone has come forward at this time.
"I am continuing to appeal for anyone who witnessed the fatal stabbing or moments leading up to it to contact officers in the incident room.
"We are particularly keen to speak to the driver of a silver or light coloured people carrier, or similar, parked briefly outside Holiday Inn in Victoria Street at approximately 6.30pm the night of incident.
"If you are this person, or know who this person is, please contact us and help our investigation.
"I would urge anyone who can assist our investigation to contact us."
Anyone with any information should contact the police incident room on 020 8721 4054.
To give information anonymously visit Crimestoppers online or call 0800 555 111.
Formal identification is yet to take place.
No arrests have been made.
Police enquiries continue.
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