You have to take this with a grain of salt as the source is a rebel leader.

Via Times of Israel:

A Syrian rebel leader claims that the Assad regime has transferred chemical weapons to the Lebanese Shiite terrorist group Hezbollah amid talks to ensure the transfer of Syria’s WMDs to international authorities for destruction.

According to a report Friday in Saudi Arabia’s al-Watan newspaper, Syrian National Coalition member Kamal al-Labwani said the rebels obtained documents and testimony from a defector from one of the Syrian government’s chemical weapons research centers that indicate Syrian President Bashar Assad transferred roughly one metric ton of VX nerve gas to its ally, Hezbollah.

Al-Labwani told al-Watan that he forwarded documentary proof of his claim to the US Embassy in Jordan and British intelligence in Doha. The al-Watan report could not be independently confirmed.

Israel has repeatedly vowed to prevent Hezbollah’s acquisition of sophisticated weaponry, including chemical weapons. In January, Israeli fighter jets carried out an airstrike near a chemical weapons facility outside Damascus. US officials said the Israelis struck the military research center and a convoy next to it, which was carrying anti-aircraft weapons destined for the Islamic militant group Hezbollah in Lebanon.