An inmate serving a 3-year sentence for robbery has died at Warkworth Institution. A release issued from the prison says Gregory Kuipers was found in his cell at 2am yesterday morning from an apparent suicide. Staff tried CPR and used a defibrillator but couldn’t revive Kuipers. The Correctional Service of Canada is conducting an investigation. Warkworth remains in a semi-lockdown following a fiery riot over a month ago.