Mystery has surrounded the boy king ever since his death in 1323BC, aged 19. The mystery intensified when the archaeologist Lord Carnarvon died in Cairo shortly after he and Howard Carter discovered Tutankhamun's tomb in 1922.

Now British experts think they have solved the riddle of the king's death. They believe injuries on his body are akin to those sustained in a chariot accident and that his mummification was botched...