A 56-year-old Ponoka man is dead three days after a collision sent him and his motorbike into a ditch along Highway 792 near Highway 53 West. 

The crash happened just after 7:30 p.m. on July 10. Mounties say the rider was taken to an Edmonton area hospital in critical condition but died of his injuries three days later. 

Police are continuing to investigate the cause of the collision.