Sanilac County deputies are asking for help after a hit-and-run in Melvin left a local woman injured. The 30-year-old was struck Thursday night on Melvin Road south of town and left in a ditch. She managed to walk home before being taken to McKenzie Memorial Hospital and later transferred to Hurley Medical Center in Flint. Authorities are searching for a GMC Sierra or Chevrolet Silverado with damage on the front right and passenger side, missing its side mirror. Anyone with information or video is urged to call Central Dispatch.