Turkey and Syria have offered very different explanations of how a Turkish F-4 Phantom jet was downed in the Mediterranean.
Syria insists the aircraft was flying low and fast, close to the Syrian coast, when they fired at it on 22 June. It was hit by land-based anti-aircraft guns with a maximum range of 2.5km (1.3 nautical miles), officials say.
Meanwhile, the Turkish authorities say that although the plane mistakenly entered Syrian airspace, it was not there when it was shot at. It was hit by a heat-seeking or laser-guided missile, they add.
According to international law, a country's airspace extends 22.2km (12 nautical miles) from its coastline, corresponding with its territorial waters.