Turkish troops briefly exchange cross-border fire with Syrian rebels near village in Idlib province, monitor says.
Turkish forces have clashed with Hay'et Tahrir al-Sham fighters in Idlib province on the Syria-Turkey border, activists and a monitor reported.
The Syrian Observatory for Human Rights, a Britain-based war monitor, said on Sunday that the Turkish troops exchanged fire with the rebel alliance near the village of Kafr Lusin.
Hay'et Tahrir al-Sham, commonly known as Tahrir al-Sham, is spearheaded by the former al-Nusra Front, which used to be al-Qaeda's branch in Syria.
In 2016, however, it changed its name and broke formal allegiance to the global movement founded by Osama bin Laden.
Rami Abdulrahman, head of the Observatory, told Al Jazeera that the rebel alliance was sending reinforcements to the border area.
"Turkish forces are not on Syrian soil yet," Abdulrahman said, adding that army was firing artillery shells across the border, while the rebel alliance attacked a Turkish military base.
Speaking to Al Jazeera from Idlib, Musa Khaled, commander of the 13th division of the Free Syrian Army, confirmed that shells had been fired.
"Yes there was heavy fire. Tahrir al-Sham hit a Turkish bulldozer on the border, so Turkish troops responded with fire. But things have calmed down now," Khaled said.
Meanwhile, residents of the border area and local rebels told Reuters news agency that Turkish military vehicles were seen entering Idlib province under escort of Tahrir al Sham rebels, allegedly to broker an agreement between the two sides.
Al Jazeera could not immediately confirm the reports.
On Saturday Turkish President Tayyip Erdogan said Syrian rebels backed by Turkish forces would launch an operation in that area, which is mostly controlled by Hay'et Tahrir al-Sham.