A St. Peter man was injured Monday afternoon when his semi-truck rolled on Highway 60 west of Lake Crystal. It happened at just before 12:30pm near Blue Earth County Road 30, about halfway between Lake Crystal and Madelia. 47-year-old Gary Fuller apparently lost control of the semi and it rolled. He suffered unspecified injuries. It is unknown if Fuller was wearing a seatbelt, but authorities say that alcohol was not involved in the crash. Assisting the State Patrol at the scene were the Lake Crystal Police Department along with Madelia Fire and Ambulance and North Air Care.