Police are investigating possible homicide" linked to what has been described as a paedophile ring involving powerful people in the 1970s and 1980s. The group is alleged to have included senior figures in public life, the military, politics and law enforcement. A key witness who has spoken to police has told the BBC that he was abused for nine years as a boy. The Metropolitan Police said, "At this early stage in this inquiry, with much work still to do, it is not appropriate to issue appeals or reveal more information." Using the name "Nick", the alleged victim said he had given three days of video-taped evidence to detectives. His accounts are being assessed as part of ... a new Scotland Yard investigation. Nick, now in his 40s, says ... the group was "very organised" and would arrange for chauffeur-driven cars to pick up boys, sometimes from school, and drive them to "parties" or "sessions" at locations including hotels and private apartments in London and other cities. "Some of them were quite open about who they were. They had no fear at all of being caught, it didn't cross their mind." Nick said he had one motivation for speaking to the BBC - to encourage other alleged victims or those who unwittingly assisted the abusers to come forward. "People who drove us around could come forward. Staff in some of the locations could come forward. We weren't smuggled in under a blanket through the back door. It was done openly and people must have questioned that and they need to come forward."