The world's chemical weapons watchdog on Friday said it had once again found traces of tear gas on the frontline with Russia in Ukraine's central-east Dnipropetrovsk region.

The international chemical weapons watchdog said Friday it had found the banned riot control agent CS in nine samples handed to it by Ukraine from the front line in its war against Russia. The Organization for the Prohibition of Chemical Weapons (OPCW) said it had identified the toxic agent in samples from four grenade shells,

Two laboratories of the Organisation for the Prohibition of Chemical Weapons (OPCW) have confirmed that Russian troops are using grenades containing prohibited chemical substances in Ukraine. Source: statement by Ukraine’s Ministry of Foreign Affairs Quote: "The OPCW experts,