The Israel Air Force has attacked multiple targets in Syria in response to the discovery of bombs planted on the Israel-Syria border by an Iran-backed military squad, the IDF announced.

This week, the IDF said its troops had discovered and neutralized several improvised explosive devices (IEDs) “which were placed by a Syrian squad led by Iranian forces.”

“In response, IDF fighter jets struck military targets belonging to the Iranian Quds force and the Syrian Armed Forces. During the strike, storage facilities, headquarters and military compounds were struck. In addition, Syrian surface-to-air missile batteries were struck,” the IDF said in a statement.

“The IED’s exposure yesterday is further clear proof of the Iranian entrenchment in Syria. The IDF holds the Syrian regime responsible for all the actions perpetrated from its territory and will continue to operate as necessary against the Iranian entrenchment in Syria, which threatens regional stability,” the statement said.

The Syrian Observatory for Human Rights, a Syrian opposition organization based in Britain, reported that three Syrian soldiers and five Iranians, who apparently belong to a Quds Force of the Iranian Revolutionary Guards, were killed. Two other dead militiamen are thought to be Lebanese or Iraqis.

“The death toll is expected to rise further as the attack left several persons injured, some seriously. There are unconfirmed reports of more casualties. Furthermore, the attack caused substantial material damage,” the group said.