O'Brien had been sentenced to 24 years in prison for Bradshaw's murder. Three of the eight men arrested on charges of conspiracy to murder Mr and Mrs Stirland, O'Brien's parents, were found guilty, in a case still being investigated by the Independent Police Complaints Commission. It has been shown that corrupt police officers passed information to gang boss Colin Gunn about the time of the murders. Gunn received a sentence of 35 years for conspiracy to murder the Stirlands and a further nine years for bribery and corruption of police officers. He was implicated and arrested, but never charged with the murder of Marian Bates, a jeweller.