Turkey released video on Saturday of what it said was a Greek soldier firing live ammunition at migrants trying to cross from Turkey. Athens denied its forces had used live bullets, Reuters reports.
The video showed migrants trying to cross over a fence and a soldier shooting at them from the other side.
A Turkish official said the footage was filmed on Saturday near the Pazarkule border crossing from western Turkey to Greece and showed a Greek soldier firing live ammunition.
Reuters could not immediately verify the authenticity of the video.
Turkey said on Feb. 28 that it would not stop migrants crossing its borders into Europe, saying it could no longer contain the millions it already hosts and the prospect of a fresh influx from fighting in northwest Syria.
Since then, teargas and smoke bombs have been fired across Turkey's border with Greece daily as migrants seek access to European Union territory.
Posting the video on Twitter, Turkey's Deputy Interior Minister Ismail Catakli said: "We are seeing European civilisation at our border with Greece."
Commenting on the video, a Greek government official told Reuters that Greek forces at the border use blanks, not live rounds.