(QHA) - The UN body tasked with removing and destroying Syria's chemical arsenal says security concerns have slowed down the process, BBC reports. Ahmet Uzumcu, head of the Organisation for the Prohibition of Chemical Weapons, said the amount of chemicals that had reached a Syrian port ready to leave the country was not that high. But he said he was confident that the weapons would be destroyed by the end of June. The OPCW plans to speed up the process. Removing the most dangerous chemicals is the first step of a UN-backed deal to eliminate Syria's chemical arsenal. Mr Uzumcu said the delays were due to technical problems and the obvious difficulties of operating in a warzone.