The Islamic State group has released a photo of the bomb it says was used to bring down a Russian passenger plane in Egypt's Sinai Peninsula last month, killing all 224 people on board.

Russia's security chief says a "terror act" brought down the Russian A321 airliner in Egypt last month, killing all 224 people on board.

Russia orders the suspension of all flights to Egypt following indications that the crash near Sharm el-Sheikh was caused by a bomb.

Intelligence suggests the Russian plane that crashed in Egypt killing all 224 people on board may have been brought down by a bomb, US and UK officials say.

Egyptian President Abdul Fattah al-Sisi has described claims that militants linked to Islamic State (IS) brought down a Russian airliner as "propaganda".

The bodies of 144 of those killed in Saturday's air crash in Egypt are flown back to the Russian city of St Petersburg as an investigation into the cause continues.