An apparent IS propaganda video has been posted by militants speaking in Russian issuing a direct threat to President Putin.
The message comes after US Intelligence and the British Government said a bomb may have brought down a plane in the Sinai desert last Saturday, killing all 224 people on board.
The words of the message have been translated as follows:
"This message is to you, Putin pig. I would like to tell you that when you were sending your plane, people and equipment in order to destroy our state and us, you were mistaken deeply that you would not regret it, that your people would not regret it."
The Irish Department of Foreign Affairs is advising against all non-essential travel to Egypt, and all Irish airlines have been told not to fly in or out of Sharm el Sheikh Airport.