The FBI has opened an investigation into allegations that News of the World journalists tried to hack into the phones of victims of the 9/11 attacks…The launch of the FBI inquiry amounts to the first official inquiry within the US into News Corporation activities…The claim that Murdoch journalists attempted to get hold of victims' phone details was made by the Mirror newspaper, which based the story on an unnamed former New York police officer working as a private detective, who was said to have been approached by News of the World reporters asking him to retrieve the private phone records of the dead...It is unclear at this early stage in the investigation whether there is any substance to the Mirror's allegations...