The Hillsborough County Sheriff's Office is investigating a fatal hit-and-run crash Friday night. 

Deputies said Linda Kay Fisher, 46, was walking northbound on Black Dairy Road along the east edge of the roadway when she was struck by an unknown vehicle just north of Russell Drive. 

Evidence at the scene indicates the vehicle could be red or orange in color, deputies said. 

The crash occurred around 11:30 p.m. Friday and deputies said Fisher was found in a ditch on the east side of the roadway at first light on Nov. 11. 

Anyone with information is asked to call the Hillsborough County Sheriff's Office at 813-247-8200.