I had also read of that quite a while ago. Lots of Turkmen in the region, and Turkey more or less claimed the region because of Turkmen active there. Sort of like what Russia did in Ukraine with Crimea, lots of Russian loyalists so they went in and took it. Lots of contested regions in the world waiting for a war to reclaim them. But yes, Hatay Province is disputed territory by Syria and Turkey. Hope they kill each other without dragging us into a wider war.
It's quite unlikely that such a mistake would be made by a modern air force, but still...