A member of the public spotted a red Audi A4 in a ditch by the side of the northbound carriageway about a mile north of Sawtry at just after noon yesterday (Sunday). It is thought the single-vehicle crash happened overnight on Saturday to Sunday (June 21-22). The man, from the Peterborough area, died at the scene. Pc Jay Porter said: I would like to speak to anyone who saw this crash or the Audi travelling north on the A1. INFORMATION: Anyone with information should contact PC Porter on 101.