The representatives of the three guarantor countries met UN Special Envoy to Syria Staffan de Mistura on Sept. 10-11 in Geneva, Hurriyet daily reported.
"During the meeting, they discussed the formation of a constitutional committee and its codes of practice which constitute an important step in the struggle of finding a political solution to the Syrian crisis," the Turkish Foreign Ministry said in a statement on September 11.
The ministry said an agreement in principle, regarding the lists that were proposed by the Syrian regime and opposition, was discussed. Also consultation was held on the formation of a third civil society group.
It added meetings between the Astana guarantor states will continue.
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