Kurdish forces in Syria have accused Turkey of repeatedly attacking their units across the border.
Turkey said it was investigating the claims but insisted the Syrian Kurdish units remained “outside the scope of the current military effort”.
Turkey launched air raids on Islamic State fighters in Syria and positions of the Kurdish militant PKK in Iraq following violent attacks in Turkey.
Turkey has also said it has no plans to send ground troops into Syria.
The Kurdish People’s Protection Units (YPG), the armed wing of the main Syrian Kurdish party (PYD), said that Turkish tanks had shelled the Kurdish-held village of Zormikhar inside Syria late on Sunday evening.
t added that, an hour later, one of its vehicles had come “under heavy fire from the Turkish military east of Kobane in the village of Til Findire”.
In a statement on Monday, the YPG said: “Instead of targeting IS terrorists’ occupied positions, Turkish forces attack our defenders’ positions. This is not the right attitude.
“We urge Turkish leadership to halt this aggression and to follow international guidelines. We are telling the Turkish Army to stop shooting at our fighters and their positions.”
A Turkish government official said its military operations sought “to neutralise imminent threats to Turkey’s regional security” and was targeting IS in Syria and the Kurdish separatist PKK in Iraq.
“We are investigating claims that the Turkish military engaged positions held by forces other than [IS],” the official said.
“The PYD, along with others, remains outside the scope of the current military effort.”
