Hollande "reiterated his indignation over the use of chemical weapons in Syria and called for a reaction by the international community commensurate with this war crime," the president's office said in a statement.
The UN Security Council was to hold an emergency meeting later today on the attack, with Britain, France and the United States pushing a resolution demanding a swift investigation.
London, Paris and Washington have pointed the finger at President Bashar al-Assad's government for the attack, though the regime has denied using chemical weapons.
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