Martensville Fire Department (MFD) members responded to a report of a natural gas leak at the Martensville Sports Centre at 8:01 a.m. Tuesday March 19,. Upon arrival it was determined the source of the leak was a broken natural gas line on the exterior of the building. Natural gas was detected in the Sports Centre. The natural gas was shut off and the building was ventilated by MFD members. Sask Energy was called to the scene. MFD members remained on scene until the building was declared clear by Sask Energy staff. The building was left under the control of Sask Energy.