The Syrian Observatory for Human Rights reported on Tuesday that 14 Iranian and Iraqi nationals were killed and several others were seriously wounded in an overnight attack in the Deir ez-Zor region in northeastern Syria.
The report attributes to Israel the attack that has hit Iranian sites and sites used by pro-Iranian militias.
Besides the report by the human rights watchdog, which opposes Syrian President Bashar al-Assad's regime, Syrian state media has remained silent on the incident and only reported another attack in the northern Aleppo province.