Grande Prairie RCMP continue to investigate a single vehicle collision which occurred September 18, and resulted in the death of one adult male.  At 5:07 p.m. on September 18, RCMP responded to a single vehicle rollover on Highway 666, 5 kilometres north of Grovedale.  A pickup truck had rolled as a result of the incident. The 68-year-old male driver from Grovedale was declared deceased on scene.  Next of kin has been notified and the identity of the deceased will not be released.  The cause of the collision is still under investigation.