A six car convoy of cars have left the Four Seasons hotel in Damascus and are headed to the scene of an alleged poison gas attack outside the Syrian capital last week. A Reuters witness said.
The team of chemical weapons experts, dressed in blue UN body armour, were accompanied by security forces and an ambulance.
They said they were headed to an area called Eastern Ghouta, a rebel-held area on the outskirts of Damascus, where activists said rockets loaded with poison gas killed hundreds of people.
More top news
Controversial columnist Katie Hopkins has described her fear that she may die during brain surgery to cure her epilepsy.
A funeral is to be held outside in the US state of Georgia for Bobbi Kristina Brown, daughter of the late Whitney Houston and Bobbi Brown.
Experts have warned that Ash dieback's impact on millions of trees could have serious consequences for the landscape and wildlife.