The CIA claims that the airliner was blown up by fighters of the Egyptian wing of ISIS.
Central intelligence Agency (CIA) has evidence that the explosion of a Russian passenger plane in Sinai involved in associated with ISIS the Egyptian group Ansar Beit al-Maqdis”.
This was stated in the Senate, CIA Director John Brennan.
“We believe that this group is involved in the destruction of a Russian airliner in the skies over Sinai”, he said.
Brennan emphasized that “this group has the opportunity to carry out terrorist attacks”.
Note, according to FSB of Russia, the cause of the accident was a terrorist attack.