(Lakeville, MN)  —  Police are searching for a suspect who assaulted and severely injured a man after a road rage accident in Lakeville.  The incident happened on October 27th behind a Walmart store.  Police say the victim, Mark Henderson of Burnsville, remains hospitalized with a broken leg.  The suspect is described as a white male in his late 40s to 50s.  He was wearing a green jacket and drove a gray Jeep Grand Cherokee.