 The hospitalized inmates had overdosed on methadone that they stole after breaking into the prison's Health Care.Convicted child pornographer, Michael Andrew Gibbon (39) was beaten to death (with baseball bats) in his cell while a second inmate, Trevor Wayne O'Brien (25), died of a drug overdose (200 ml of 175 mg methadone, first time he'd tried it) later in hospital.This is not the first time an inmate convicted of sexual offenses involving children has died in this prison facility.