Free Syrian Army spokesman Colonel Kassem Saadeddine denies any involvement in the Aleppo attack on a bus transporting troops.

"The Free Syrian Army has nothing to do with any attacks. What is reported by SANA [the official Syrian Arab News Agency] is propaganda. This act is a manoeuvre by the regime to avoid fulfilling its commitment and say that the Free Syrian Army violated the truce," he said.

"Security forces and shabiha [militiamen] are behind these acts."