Chemical 'substance' used in Syria, hundreds killed: UN envoy

The UN-Arab League special envoy for Syria, Lakhdar Brahimi, said it was clear a chemical substance had been used in an August 21 attack in the war-torn country, killing hundreds of people.

Speaking to reporters in Geneva about the suspected chemical attack, Brahimi said "it does seem some kind of substance was used that killed a lot of people. Hundreds. Definitely more than 100, some people say 300, some people say 600, maybe 1,000, maybe more than 1,000 people."