A post mortem found he died from multiple stab wounds. His 16-year-old friend was also found suffering stab injuries after fleeing into a shop on the same street. He is recovering from his wounds. Five other males have been arrested on suspicion of murder, Scotland Yard said. One 17-year-old, two 19-year-olds and two 20-year-old men are due back on bail in late March and April. Det Ch Insp Mark Wrigley said Sven’s family has been left "utterly devastated". Anybody with information should call police on 101 with reference CAD 5580/06Feb. Alternatively, contact Crimestoppers anonymously on 0800 555 111. Become a Supporter This newspaper has been a central part of community life for many years. Our industry faces testing times, which is why we're asking for your support. Every contribution will help us continue to produce local journalism that makes a measurable difference to our community.