Investigators of the Russian plane crash in Egypt are "90 percent sure" the noise heard in the final second of a cockpit recording was an explosion caused by a bomb, a member of the investigation team told Reuters on Sunday.<br />The Airbus A321 crashed 23 minutes after taking off from the Sharm al-Sheikh tourist resort eight days ago, killing all 224 passengers and crew.<br />Islamic State militants fighting Egyptian security forces in Sinai said they brought it down.<br />"The indications and analysis so far of the sound on the black box indicate it was a bomb," said the Egyptian investigation team member, who asked not to be named due to sensitivities.<br />"We are 90 percent sure it was a bomb."<br />His comments reflect a higher degree of certainty about the cause of the crash than the investigation committee has so far declared in public.
