DAUPHIN COUNTY – A female pedestrian was struck and killed along Interstate 81 north in Susquehanna Township, Dauphin County on Saturday morning. State Police responded shortly after 3 a.m. to the area of the Progress Avenue exit. The victim was identified as 31-year-old Sarah Cook of York. Investigators are seeking the public’s help with any information regarding the incident. They are asking motorists who were in the area at that time to look at their vehicle for any damage as the driver may have unintentionally struck the victim. Anyone with information is asked to contact PSP Harrisburg at 717-671-7500.