Missiles hit a number of military sites in northern Syria on Sunday night, state media say, with unconfirmed reports of dozens of fatalities.

The Syrian military said facilities in Hama and Aleppo provinces were struck.

It did not immediately report any casualties. But a UK-based monitoring group said 26 pro-government fighters were killed, most of them Iranians.

It is not known who was behind the attacks. Western nations and Israel have previously hit sites in Syria.

Earlier this month, the US, UK and France bombed three facilities they said were associated with the Syrian government's alleged chemical weapons programme.

Israel is meanwhile alleged to have hit an airbase serving as an Iranian drone command centre. Seven Iranian soldiers were among 14 military personnel killed in that attack.

A Syrian military source cited by the official Sana news agency said only that the military sites targeted on Sunday night had been "exposed… to a new aggression".

The source added that the strikes came after terrorist organisations had suffered defeats in the countryside of the capital, Damascus, an apparent reference to the recapture of the Eastern Ghouta region from rebel groups.