Detectives are keen to trace three men seen loitering in the area before a man was stabbed at a property in Roehampton.
The victim, believed to be in his late 30s, was found with serious injuries, following a break-in at the house, on Tuesday evening.
A 15-year-old boy has been remanded in custody after appearing in court today, charged with murder, and a 17-year-old male is being questioned by police.
Anyone with information should call police on 0208 721 4205 or Crimestoppers on 0800 555 111.
More top news
Fulham will play Aston Villa in the richest prize in football when they face each one another in the Championship play-off final.
A suspected killer who has been on the run for more than two years has been placed on a worldwide most wanted list.
Sophie Lionnet’s devastated parents say the killers “do not deserve to live”.