A police officer who put himself in harm's way during a hit-and-run crash on the M8 is among three individuals fighting for their lives. The crash near junction 13 at Provan involved seven men, all taken to the Queen Elizabeth University Hospital and Glasgow Royal Infirmary. The 48-year-old officer and two other men, aged 43 and 39, are in critical condition. Two on-duty officers in an unmarked Volvo S90 had stopped with a Mercedes CLS on the hard shoulder when they were struck by a Mercedes A45. Three men from the A45 fled the scene. A 27-year-old man has been arrested for road traffic offenses, and the two others, aged 33 and 39, were later found. The wreckage pictures show extensive damage, with twisted metal and scattered debris. Another officer, aged 38, and a 33-year-old man are in serious condition. The eastbound carriageway remains closed for investigation. Deputy Chief Constable Jane Connors expressed support for the injured officers and public, praising their bravery. Chief Superintendent Hilary Sloan urged witnesses to come forward with any information.