One person is dead following a single-vehicle collision in Southwold Township. Elgin County OPP and Middlesex-London Paramedic Service were called to John Wise Line shortly after 7:25 p.m. Friday for a report of a single-vehicle collision. The driver was pronounced dead at the scene. Members of the OPP Traffic Incident Management Enforcement team are assisting with the investigation. John Wise Line is closed between Begg Road and Middle River Road while the investigation continues.