Russian authorities have said the crash of the Metrojet operated A321-200 in the Sinai Peninsula on October 31 was caused by a bomb.
At a government meeting held in Moscow on Monday (November 16), Alexander Bortnikov, head of Russia’s Federal Security Service, said investigators had found evidence of a bomb being used to down flight 9268 which resulted in the death of all 224 people on board.
"According to our experts, a homemade explosive device equivalent to one kilogram of TNT went off onboard, which caused the plane to break up in the air, which explains why the fuselage was scattered over such a large territory. I can certainly say that this was a terrorist act," he said.
The aircraft was headed to St. Petersburg from Sharm el-Sheikh when it crashed just 23 minutes after take-off.