Russia’s Security Chief Alexander Bortnikov says an act of terror brought down the Russian A321 airliner in Egypt last month, killing all 224 people on board. Traces of foreign explosives were found on debris from the Airbus plane, FSB Chief Bortnikov told President Vladimir Putin.

Mr Putin vowed to find and punish those behind the attack over the Sinai peninsula. A branch of so called Islamic State said it downed the plane. Nearly all the dead were Russians. Mr Bortnikov said a bomb had been planted on board the Metrojet plane, equivalent to up to 1 kg of TNT.