For over an hour, the sound of people trying to direct each other in multiple languages through farms, woodlands, and across riverbanks was punctuated by shots. First it sounded like single rifle blasts, then came bursts of three, and then longer, heavier automatic fire.

However, when Papastathis appeared on Wednesday afternoon to direct us to the new location, he denied absolutely that we had heard what we heard.

"Only tear gas is being fired," he insisted to a group of a dozen journalists on the tracks.

Turkey accused Greece of killing a Syrian man and wounding five other people. The next day footage of Greek soldiers apparently firing in the direction of migrants on the border surfaced online. And more signs of the Greeks using live fire on migrants and asylum seekers could be found at a makeshift camp for people waiting to cross the Evros River near the Turkish city of Edirne.