Police have released CCTV footage of a man who they believe may have witnessed the murder of Stephen Lawrence.
A gang of six men stabbed Stephen, 18, to death in a racially motivated attack in Eltham, southeast London, in April 1993.
Gary Dobson, 37, and David Norris, 36, were found guilty of the attack and jailed for life in 2012, but the other attackers have not yet been found.
Newly released CCTV footage shows a man wearing a 'V' emblem jacket which police previously appealed for information about.
The video was captured two hours before the attack, in an off licence 330 yards from the bus stop on Well Hall Road where Stephen was murdered.
Stephen Lawrence died from stab wounds to his collarbone and left shoulder
Witnesses have previously reported seeing a man in a 'V' emblem jacket on Well Hall Road roundabout around the time Stephen was killed, Met Police said.
Detective Chief Inspector Chris Le Pere said: "We are appealing for this man to come forward so that we can speak to him to establish if he can assist with our enquiries, or if we can eliminate this strand of the investigation.
"He was seen in the off licence at 8pm and then again later that night not far from where Stephen was attacked.
"It is important that we speak with him."
Footage from the off licence has been digitally enhanced
After being stabbed twice Stephen Lawrence managed to escape his attackers and run 130 yards before collapsing.
He was taken to Brook Hospital but was pronounced dead shortly after arriving.
Met Police said that the digitally enhanced CCTV images were recently obtained during a review of the murder case.
DCI Le Pere added: "The investigation remains open.
"Two individuals were found guilty of murder, but officers continue to follow lines of enquiry.
"We are hoping that over the passage of time allegiances may have changed, people may have moved away and feel more confident coming forward."
Anyone with information is asked to contact Met Police on 020 8785 8310 or Crimestoppers on 0800 555 111.