Syria has met Sunday's deadline for submitting a formal declaration of its chemical weapons program, which includes a plan for its abolition, the international chemical weapons watchdog said.

"The document from Syria includes a general plan of destruction for consideration by the OPCW Executive Council," the Organization for the Prohibition of Chemical weapons (OPCW) said Sunday.

The international body, based in The Hague, also said it has sent its first monthly report on its joint mission with the United Nations in Syria to its member states and the UN.

Its inspectors arrived in Damascus October 1 to begin work on verifying Syria's chemical weapons production and storage sites and supervising their destruction.

The UN Security Council in September passed a resolution to eliminate Syria's chemical stockpile by mid-2014.