TEHRAN (FNA)- Deputy Chief of Dubai's Police Force Lieutenant General Dahi Khalfan said Israel's spy agency, Mossad, has most likely been behind the downing of the Russian passenger plane that crashed in Egypt's Sinai Peninsula in October.

"There is a strong possibility that Israel's intelligence has been involved in the terrorist bombing which brought down the Russian Airbus A321 in Egypt in October," Khalfan wrote on his Twitter account on Sunday.

He pointed to the close cooperation between Egypt and Russia, and said Israel cannot undermine the ties between Moscow and Cairo through such actions. "The Russian and Egyptian presidents have agreed on the construction of a nuclear power plant by Russia in Egypt."

The Sinai air crash became the deadliest air accident in the history of Russian aviation, surpassing the 1985 disaster in Uzbekistan, where 200 people died.

ISIL had claimed responsibility for the downing of the Russian passenger plane that crashed in Egypt's Sinai Peninsula.

On Tuesday, Russian Federal Security Service Head Alexander Bortnikov said that the detonation of a homemade explosive device with an equivalent of 1 kilogram of TNT caused the crash that killed 224 people over Egypt’s Sinai Peninsula on October 31.

"No change there. The offensive of the Syrian army continues, the effective fight against the ISIL only by Air Forces is not feasible so the main direction is a ground operation. In this case, the only force performing ground operation is the army of the Syrian Republic," Peskov told reporters.

He stressed that the Russian Aerospace Forces would provide assistance to the Syrian army while its anti-ISIL continued operation.

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