On Wednesday least 40 people were killed and as many injured in airstrikes attributed to Israel that targeted three different Iranian weapons facilities in eastern Syria on the Iraqi border.

The Syrian Observatory for Human Rights said that in the attacks that occurred just after midnight only nine of the dead were Syrians with the rest belonging to “loyal militias of Iranian nationalities other than Syria.”

The SOHR said the attacks extended from the city of Al-Zour city to the Syrian-Iraqi border and targeted ammunition and weapons depots for the regime forces, the Lebanese Hezbollah, Iranian forces and militias loyal to it.

Quoting a senior U.S. intelligence official with knowledge of the attack, the Associated Press reported that the U.S. supplied Israel with intelligence for the airstrikes that “targeted a series of warehouses in Syria that were being used in a pipeline to store and stage Iranian weapons.”