The Roanoke Police Department is asking for help from the public in two unrelated fatal hit and run cases. The first case was the hit and run of 56-year-old Christine Turner on October 29, 2013. Investigators say Turner was trying to cross Melrose Avenue when she was hit. She passed away three months later. The second case was the hit and run of 45-year-old Sandra Loughry on July 5, 2014. Investigators say Loughry was walking along Shenandoah Avenue when she was hit. She died at the scene. If you have any information you are encouraged to call the Roanoke Valley Crime Line at 540-344-8500. All tips are anonymous and rewards are offered for the right information.