DAMASCUS - The United Nations chemical experts left the Syrian capital of Damascus on Monday for Lebanon after finishing its second round of investigation in the war-torn country, UN sources told Xinhua.

The team, whose report is due to be finalized by late October, returned to Damascus on Wednesday to complete their second round of probe into the alleged use of chemical weapons in seven locations in Syria.

The fact-finding group, which was assembled in The Hague in early August, would be replaced by a broader mission from the UN to oversee the eradication of the Syria's chemical arsenal, according to a UN resolution providing for eliminating Syria's chemical stocks by mid-2014.

The new expanded UN team is expected to arrive in Damascus on Tuesday.

In his recent interview with an Italian TV, Syrian President Bashar al-Assad stressed his commitment to the new UN resolution.(Xinhua)