Provincial Police were forced to shut down Muskoka Road 117 in Lake of Bays following a serious collision. The collision happened Thursday afternoon, just before 4 p.m. OPP shut down Muskoka Road 117 between South Longline Lake Road and Lake of Bays Marine Road. Residents were asked to take alternate routes as emergency crews attended the scene. Five people were taken to the hospital, police say, one with life-threatening injuries and four others with serious injuries. While crews were on scene, the road closure was extended along Muskoka Road 177 to Browns Brae Road and Paint Lake Road. Roads reopened shortly after 11 p.m. CTV News has reached out to OPP for more information on this collision. Check back for updates.