[MOSCOW] Russia's defence ministry said on Tuesday one of its fighter jets was downed in Syria, apparently after coming under fire from the ground, Interfax news agency reported.
The Turkish military said in a statement it shot down a plane after it was repeatedly warned - 10 times in the space of five minutes - about violating Turkish airspace.
Two Turkish F-16 jets on patrol duty along the border were involved in the downing of the warplane, whose origin was unknown, the military statement said.
But the Russian defence ministry said the Su-24 plane had not violated Turkish airspace. The ministry said the pilots of the jet had ejected and parachuted to the ground.