The Highway 1 eastbound lanes have reopened following a major collision last night. The Moose Jaw Police Service were called at about 10 p.m. on Tuesday night to a four-vehicle collision on Highway 1 between Caribou Street East and the Highway 2 junction. The collision involved three semis and a single passenger vehicle. Police say there were no major injuries reported as a result of the collision. The Moose Jaw Police Service continue to investigate the collision and will release additional information as it becomes available.