A vigil outside Streatham Ice Rink marked the fourth anniversary of the unsolved murder of a 17-year-old.

James Andre Smartt-Ford was shot dead on February 3, 2007, and police continue to appeal for witnesses to come forward, even offering a reward of £20,000 for information leading to the identification, arrest and prosecution of murderer.

Andre, or Dre as he was known to his family and friends, was gunned down at the ice rink, at about 10.55pm, during a disco attended by more than 300 teenagers.

He was taken to St George's Hospital where he was pronounced dead an hour later.

His mother Tracey Ford held a vigil outside the rink where friends and family wore orange to signify “peace” and lit candles by a picture of her son.

Detectives from Trident continue to investigate, but as yet no one has been charged.

On the night of the murder, Andre was in the area at the bottom of the stairs leading onto the ice, when he was approached by a black youth wearing dark clothing.

It was at this point that two shots were fired at him.

He managed to stagger a few metres onto the ice, before collapsing.

A postmortem examination gave cause of death as gunshot wounds.

Eighteen people were arrested in connection with the investigation, including seven on the night of the murder, but all have been released and no one has been charged.

Detective Inspector Henry Lindsey, from the Trident team investigating Andre's murder, said: “Four years have now passed since Andre was brutally murdered in front of a significant number of witnesses.

“We want to hear from anyone who may remember something from that night and ask that those who may not have spoken to us before to come forward and help us bring the murderer to justice.

“We believe there are those who have information key to this investigation. These witnesses have the power to bring an end to this and to take dangerous people off the street who cause harm to their community.

“We remain determined to solve this murder and bring some resolution for Andre and his family."

Trident are appealing for anyone who may have information, or who was at the event, to call the incident room on 020 8247 4554 or call Crimestoppers anonymously on 0800 555 111.