Mounties are investigating the third fatal car crash in the past nine days in Lunenburg County. Police say a man is dead after a collision between a car and an SUV this morning in Lower Northfield. It occurred shortly after 8:00am. A woman also involved in the crash has been airlifted to the QE II in Halifax. She has serious injuries. An RCMP traffic analyst has been called to help with the investigation. On November 15, a 23 year old man was killed in a single vehicle crash in Blockhouse while an elderly man died after a head on collision in Hebbs Cross on Wednesday.