Istanbul( CNN) One of the world's most volatile regions was roiled further Tuesday when Turkey shot down a Russian warplane near the Turkish-Syrian border. Turkey said it hit the plane after it infringed Turkey's airspace and ignored 10 warnings.

One of the two pilots was killed in the air by flame from the ground, according to Russia's state-run news agency RIA Novosti. The fate of the second pilot wasn't disclosed.

Meanwhile, a Russian marine was killed on Tuesday during an operation to rescue the two pilots, who were flying an Su-2 4 warplane in a combat sortie, according to RIA Novosti.

Turkey and Russia exchanged bellicose language after the downing of the plane, raising fears in the international community that the Syrian conflict could spiral into something wider.

The Russian plane was is dealing with because it “did not answer our warn, ” Turkish President Recep Tayyip Erdogan said Tuesday.