Community Care, 20th May 1982
In 1983, several boys were drugged and sexually assaulted by an unknown attacker on the Frampton Park Estate in Hackney. This was the same estate where Robert Oliver and Leslie Bailey lived as of 1989 (source). They were convicted for their part in drugging, sexually assaulting, and killing boys at a flat on the nearby Kingsmead Estate, with Sidney Cooke, Lennie Smith, Stephen Barrell, and a number of unknown men.
Hackney Gazette, 29th July 1983