(reuters) -- In the single biggest loss of military hardware for Russia since it launched air strike in Syria in autumn 2015, more than 10 servicemen were wounded in the attack, the report said.

At least four Su-24 bombers, two Su-35S fighters and an An-72 transport plane, as well as an ammunition depot, were destroyed by the shelling, Kommersant said on its website, citing two “military-diplomatic” sources.

Kommersant said the Russian defense ministry had not commented.

Earlier on Wednesday, the ministry said a Mi-24 helicopter had crash-landed in Syria on Dec. 31 due to a technical fault and two pilots died.

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