Syria's transitional leadership has located remnants of former Syrian president Bashar al-Assad's clandestine chemical weapons program, including raw materials and munitions similar to those used to carry out deadly gas attacks during the country's long-running civil war, a Syrian official told Reuters on Tuesday. Syrian authorities have also taken into custody 18 suspects for alleged involvement in Assad's chemical weapons program, including high-level military, political and technical officials, said Mohamad Katoub, Syria's permanent representative to the Organisation for the Prohibition of Chemical Weapons (OPCW) in The Hague, in an interview.