Beheaded: Islamic militants carry out threat to kill US hostage
The militants posted three grisly photographs of Paul Johnson's severed head on a website and threatened the same punishment for other Americans "and their allies in the war against Islam".
The photographs and statement, in the name of Fallujah Brigade of al-Qaida in the Arabian Peninsula, appeared hours after Mr Johnson's wife went on Arab television and tearfully pleaded for his release.




