Israeli aircraft have carried out a strike near the Syrian coastal city of Latakia, a U.S. official says, according to BBC News.

The official said the strike targeted Russian-made missiles intended for the Lebanese militant group Hezbollah.

Latakia is a stronghold of Syrian President Bashar al-Assad, an important port city where the Alawite community to which he belongs is concentrated.

Israel is widely reported to have carried out at least three air strikes in Syria so far this year.

Reports of the strike came as the Organisation for the Prohibition of Chemical Weapons (OPCW) said all Syria's declared equipment for making chemical weapons had been destroyed, one day before a deadline.

Action by the OPCW was agreed following allegations, denied by the Syrian government, that its forces had used chemical weapons in civilian areas - and after the U.S. and France threatened military intervention.