A radicalised Islamist knifeman who stabbed a policewoman and then went on the run with her handgun has been shot dead by police in France. The man, named by Le Figaro as Ndiaga Dieye, aged 39, launched the attack inside a police station in La Chappelle-sur-Erdre, near the city of Nantes, around 10am - leaving her with life-threatening wounds though she is expected to survive.