Michigan State Police troopers are investigating a fatal pedestrian crash from over the past weekend in Peck. Authorities say the incident occurred at approximately 3:15pm Saturday along Elk Street near Lapeer Street. 77 year old Mary Ann Longuski was found critically injured in the roadway and is believed to have been struck by a vehicle. She was taken to an area hospital where she died of her injuries. Troopers form the Caro Post are seeking witnesses to the crash. Those with any information are asked to call 989-673-2156.