Russian invaders used poisonous substance in Mariupol – Azov Regiment

Fighters of the Azov Regiment, who are defending the city, reported this on Telegram, Ukrinform reports.

"About an hour ago, the Russian occupation forces used a poisonous substance of unknown origin against the Ukrainian military and civilians in the city of Mariupol, which was dropped from an enemy UAV. The victims have respiratory failure, vestibular-atactic syndrome," the statement reads.

The consequences of the use of the unknown substance are being clarified, the statement said.