Hopelessness and anger as Corey Dobbe's killer remains at large five weeks after murder Corey's girlfriend says the agonising situation has become 'almost a joke' The video will auto-play soon8Cancel Play now Frustration is growing among the family and friends of murdered Corey Dobbe as his killer remains on the loose. It is now five weeks since the 23-year-old was tragically stabbed to death off Harleston Close in Hull, close to Holderness Drain. Despite police naming the man they want to speak to in relation to Corey’s death three weeks ago, they seem no closer in tracking down Moise Djuku.