A mortar attack might have destroyed 7 Russian fighters in Syria

The Russian Ministry of Defense confirmed that two "military personnel" died in a mortar attack on its Khmeimim airbase in Syria's Latakia Province on Dec. 31.

The admission comes amid reports from Russian newspaper Kommersant that the attack destroyed at least seven Russian aircraft as well — four Su-24 bombers, two Su-35S fighters, and an An-72 transport plane. Kommersant also reported that an ammunition depot was destroyed as well.

But the Russian MoD pushed back on those reports, according to the Russian government-funded news outlet RT.

"Kommersant's report on the alleged 'destruction' of seven Russian military aircraft at Khmeimim Airbase is fake," the MoD said in a statement, according to RT.

It would not be the first time Russian aircraft were destroyed in an artillery attack at an airbase in Syria.

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STRATFOR published satellite imagery last May that revealed an ISIS attack at the T4 air base in central Syria had resulted in the destruction of  four Russian Mi-24 attack helicopters and a supply depot. The attack also damaged a Syrian MiG-25 "that was likely already out of commission," according to STRATFOR.

Other incidents have included a Russian jet being shot down and several reports of jets crashing due to mechanical failure.

Widescale destruction of Russian jets from ground attacks has not been reported before, and would be a significantly larger loss.