The US-led anti-militant military coalition announced Tuesday that it has killed 150 Islamic State fighters during a bombing raid on the Euphrates Valley in Syria.

The air strike, the statement said, took place Saturday near Al-Shafah, on the east bank of the river, in the province of Deir Ezzor. It was conducted on local jihadist headquarters, after the coalition noticed a crowd of fighters.

“The precision bombing was the culmination of a thorough intelligence preparation to confirm that the headquarters (…) was a place exclusively occupied by the IS,” the coalition said, adding that civilian victim is to be deplored.

The ultra-radical organization, which has lost the vast majority of the territories it controlled in Syria, retains some pockets of residual activity, especially along the Euphrates.

According to the statement, Washington’s Arab-Kurdish allies, the Syrian Democratic Forces (SDF), helped the coalition on the sidelines of the bombing.