London police say they have concluded a high-profile inquiry into allegations that politicians and senior public figures were part of a paedophile ring that had murdered three young boys, but will not charge anyone.
The investigation was launched in late 2014 after an alleged victim told detectives he was sexually abused at military establishments and flats close to parliament.
The police initially described the allegations, dating back to the 1970s and 80s, as "credible and true".
A number of prominent figures were among the suspects, including the late former prime minister Edward Heath.
However, police said the investigation had not found any evidence that justified prosecutions.
In a separate case, the New Zealand High Court judge Lowell Goddard is overseeing a major inquiry into decades of child abuse and whether powerful figures covered it up.