The rebel Free Syrian Army says it has formed special units to secure the country's chemical weapons.

The issue of what could come of Syria's cache of chemical weapons amid the instability and fighting in the country has prompted international concerns, with Russia and Israel weighing on where and how the weapons are being stored.

Rebel Brigadier General Salim Idris told Al Jazeera that the special units "provide us with intelligence on any movement at those sites and as soon as the regime falls, we have units tasked with securing the depots”.

Al Jazeera's Hashem Ahelbarra reports from Antakya in neighbouring Turkey.

Source: Al Jazeera and agencies