Investigations begin into cause of Russian airliner crash - in pictures

International investigators have begun probing why a Russian airliner carrying 224 people crashed in a mountainous area of Egypt’s Sinai Peninsula, killing everyone on board in one of the deadliest Airbus incidents of the past decade. As Russia on Sunday started a day of mourning for the victims, Cairo and Moscow both rejected the claim from a militant group affiliated with ISIL militants that it downed the aircraft flown by the Kogalymavia airline, operating under the name Metrojet.