Cairo

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.

The Airbus A321 crashed 23 minutes after taking off from the Sharm el-Sheikh tourist resort eight days ago, killing all 224 passengers and crew. Islamic State of Iraq and Syria (ISIS) militants fighting Egyptian security forces in Sinai said they brought it down.