Investigators probe deadly crash

Cairo and Moscow have both rejected the claim by IS that it brought down aircraft in Egypt

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.

Flags will fly at half mast on official buildings in Russia on Sunday and entertainment television programs will be canceled as part of a national day of mourning for the victims, most of them Russians aged from 10 months to 77 years.