(LAPEER COUNTY) -- The Lapeer County Sheriff's Office reports that a 57-year old woman from Lapeer is dead after being struck by a pickup truck late Friday night. The woman and her companion, a 41-year old Lapeer resident, were walking south alongside Saginaw Street in Lapeer County's Mayfield Township around 11:45 p.m. A Sonoma pickup truck traveling south on Saginaw Street struck the women. The driver of the pick-up, a 17-year old Attica resident, did not stop at the scene, but instead returned an hour later with their parents. The 57-year old woman was pronounced dead at the scene. The 41-year old pedestrian was transported to McLaren-Lapeer Region Hospital for non-life threatening injuries. The investigation is ongoing to determine if alcohol was a contributing factor. Names are being withheld pending notification.