Turkish Foreign Minister Ahmet Davutoglu on Saturday talked with his American counterpart John Kerry over Syria.
The chemical weapon attack in Syrian capital Damascus on Wednesday was handled during the phone conversation, where the steps to be taken were also evaluated, diplomatic sources said.
Davutoglu held telephone calls twice with Kerry over Syrian incidents on Saturday.
On Wednesday, Syrian opposition coalition blamed the Syrian regime forces of carrying out a chemical weapon attack in suburbs of capital Damascus which it said killed at least 1,300 people.
But the Syrian regime strongly denied the claim and described reports and figures as "lies and groundless," saying reports were aimed at "distracting a visiting team of United Nations chemical weapons experts from their mission."
A UN investigation team is currently in Syria to investigate earlier an allegation of use of chemical weapons reported by the Syrian government at Khan al-Assal as well as two other allegations reported by UN Security Council member states.