The Organization for the Prohibition of Chemical Weapons (OPCW) says its inspectors have visited 11 sites in Syria identified by the Syrian government as part of its chemical weapons program.
The OPCW, in an update on its mission, said that inspectors destroyed "critical equipment" at six of the sites.
The UN-backed organization is tasked with overseeing the destruction of Syria's chemical weapons arsenal, precursor chemicals, and production facilities. Under the terms of a UN Security Council resolution, the stockpiles have to be destroyed by mid-2014.
Syria agreed to hand over its chemical weapons stockpiles after the United States threatened military strikes in the wake of an August sarin gas attack near Damascus that killed more than 1,400 people.
International experts began eliminating Syria's chemical weapons last week.
With reporting from AFP and AP