<p>Russian forces struck a tank containing nitric acid at a chemical plant in Ukraine's eastern city of Severodonetsk that they are trying to seize, the local governor said Tuesday, calling on people to stay in shelters.</p>.<p>An air strike by Moscow forces "hit a tank with nitric acid at a chemical plant", the governor of the Lugansk region, Sergiy Gaiday, said on Telegram. "Nitric acid is dangerous if inhaled, swallowed and in contact with skin," he added.</p>.<p>"Do not come out of shelters!" Gaiday said.</p>.<p>He asked remaining residents in the city -- which has seen fierce battles for days -- to "prepare protective face masks impregnated with soda solution".</p>.<p>Pro-Moscow separatist authorities said the tank had "exploded" on territory controlled by Ukrainian forces.</p>.<p>"At the Azot chemical plant, a container with chemicals was blown up. Preliminarily, it is nitric acid," Rodion Mironchik, a representative of the self-proclaimed Lugansk People's Republic, said on Telegram.</p>.<p>He said the territory of the plant was under Ukrainian control.</p>.<p>Ukrainian officials said Tuesday that advancing Moscow forces now control half of Severodonetsk, a key goal for the Russian army.</p>
<p>Russian forces struck a tank containing nitric acid at a chemical plant in Ukraine's eastern city of Severodonetsk that they are trying to seize, the local governor said Tuesday, calling on people to stay in shelters.</p>.<p>An air strike by Moscow forces "hit a tank with nitric acid at a chemical plant", the governor of the Lugansk region, Sergiy Gaiday, said on Telegram. "Nitric acid is dangerous if inhaled, swallowed and in contact with skin," he added.</p>.<p>"Do not come out of shelters!" Gaiday said.</p>.<p>He asked remaining residents in the city -- which has seen fierce battles for days -- to "prepare protective face masks impregnated with soda solution".</p>.<p>Pro-Moscow separatist authorities said the tank had "exploded" on territory controlled by Ukrainian forces.</p>.<p>"At the Azot chemical plant, a container with chemicals was blown up. Preliminarily, it is nitric acid," Rodion Mironchik, a representative of the self-proclaimed Lugansk People's Republic, said on Telegram.</p>.<p>He said the territory of the plant was under Ukrainian control.</p>.<p>Ukrainian officials said Tuesday that advancing Moscow forces now control half of Severodonetsk, a key goal for the Russian army.</p>