Emergency services attended a crash in Dunstable town centre this morning.
Beds Police were called at around 10.50am to reports that a car had collided with a wall.
High Street North wasclosed between Chiltern Road and Capron Road.
East of England Ambulance Service confirmed they had treated a man in his 50s.
A spokesman said: “We treated one patient at the scene, believed to be in cardiac arrest.
“Following treatement at the scene, they managed to get his heart beating and he was taken in a critical condition by air ambulance to Lister Hospital.”