Detectives investigating the murder of a 21-year-old man have named a teenage suspect who may be being hidden by friends.
George David, 16, from Downham, should not be approached by members of the public, police warned.
Anyone who sees him is urged to dial 999 immediately.
Gabriel Petrov Stoyanov was stabbed to death by up to three thugs who fled on foot along a south east London high street at 11.50pm on Friday.
Mr Stoyanov was rushed to hospital after the “senseless” knife attack in Bromley Road, Downham. He died of his injuries on Saturday afternoon.
Online tributes were paid to “a true gentleman with a heart of gold”.
Scotland Yard took the highly unusual step of identifying George, who has links to Bromley and Orpington, on Thursday night.
A 14-year-old boy and a 17-year-old youth were arrested on suspicion of murder this week and remain in custody.
Detective Chief Inspector Kelly Allen, leading the Metropolitan Police investigation, said: “Two arrests have been made as part of our investigation but we urgently need to speak to George David. Officers from across the Met are working to trace him.
“George, my message directly to you is that you must attend a police station immediately.
“We believe it’s possible George is being hidden or moved around by people he knows.
“My message to those people is that if you are working to frustrate our enquiries you should be very much aware of the trouble you could find yourself in. We will seek to arrest and prosecute you to the fullest extent of the law.”
#WANTED | Have you seen 16-year-old George David from #Downham?
He is wanted on suspicion of the murder of Gabriel Petrov Stoyanov.
Anyone who sees him is urged to 📞 999 immediately, ref CAD 8645/4 Nov. He should not be approached.https://t.co/gZa8bITFrA
— Lewisham MPS (@MPSLewisham) November 10, 2022
One of Mr Stoyanov’s friends wrote on Facebook: “Left the party too soon my friend. I hope you are in a better place. Words are not enough, but we will always carry you in our hearts.
“We’ll see each other again I’m sure I’m asking anyone willing to help his family through this ordeal. We love you, Gabriel!”
Another said: “This was a good man that lost his life over nothing.”
Anyone with information can call 101, ref 8645/4Nov, or Crimestoppers anonymously on 0800 555 111.