Turkish army tanks make their way towards the Syrian border town of Jarablus, Syria August 24, 2016. Revolutionary Forces of Syria Media Office/Handout via REUTERS

KARKAMIS, Turkey (Reuters) - The Turkish military shelled a group of Syrian Kurdish fighters south of the town of Jarablus on Thursday, a Turkish security source said, a day after Turkey launched its first U.S.-backed incursion into Syria.

The shelling occurred near Manbij, an area controlled by the U.S.-allied Kurdish militia the People’s Protection Units (YPG), after the fighters did not heed a warning from Turkish forces, CNN Turk said. Jarablus lies about 40 km north of Manbij.

President Tayyip Erdogan and senior government officials have made clear the aim of “Operation Euphrates Shield” is as much about stopping the Kurdish YPG militia seizing territory and filling the void left by Islamic State as about eliminating the radical Islamist group itself.