Russia-Ukraine war latest: Zelenskiy pleads for weapons to avoid ‘bloodbath’; Ukraine says east of country braced for attack – live

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The world's chemical weapons watchdog has said it is concerned" over reports of the use of chemical weapons in the besieged Ukrainian port of Mariupol.

Reports first emerged on Monday from Ukraine's Azov battalion that a Russian drone had dropped a poisonous substance" on troops and civilians in Mariupol.

The Technical Secretariat of the OPCW is monitoring closely the situation in Ukraine. The Secretariat is concerned by the recent unconfirmed report of chemical weapons use in Mariupol, which has been carried in the media over the past 24 hours.

This follows reports in the media over the past few weeks of shelling targeted at chemical plants located in Ukraine, together with accusations levelled by both sides around possible misuse of toxic chemicals.