The body of an American, Tom Fox, who was among four Christian peace activists kidnapped in Iraq has been found. US officials said the body had been identified by the FBI and that his family had been informed. No other details about how or where his body was found have been released.Fox was abducted along with a Briton and two Canadians in Baghdad in November last year. They had been working for the group Christian Peacemaker Teams. Their kidnapping was claimed by a previously unknown organisation.