All category 3 (unfilled) munitions declared by Syria have been destroyed, the Organisation for the Prohibition of Chemical Weapons (OPCW) and the United Nations announced in a statement published on Friday.

OPCW stated that it has "also verified the destruction of additional special features of buildings and structures at chemical weapons production facilities that were already rendered inoperable during the first phase of the mission."

"These activities were conducted at the Homs cluster of sites that had remained inaccessible for some time due to security reasons," according to the statement.

In addition, in a statement published on Thursday, special Coordinator of the OPCW-UN Joint Mission Sigrid Kaag said preparations are under way for "Phase III", namely the removal of chemical agents out of the country.

The plan is to transport the chemical agents to the Syrian port city of Latakia, where they will be shipped on commercial vessels provided by some Member States. They will then be loaded onto a United States ship and destroyed at sea using hydrolysis.

The joint mission of the OPCW and the UN for removing Syria's chemical agents out of the country for their destruction was set up two months ago to achieve the timely elimination of the Syrian chemical weapons program in the safest and most secure manner possible. Deadline for elimination is 30 June 2014.