Russia's defence ministry accused Ukraine on Saturday of poisoning some of its servicemen in the Russian-controlled part of Ukraine's southeastern region of Zaporizhzhia in late July.
An adviser to Ukraine's interior ministry said in response that the alleged poisoning could have been caused by Russian forces eating expired canned meat.
The Russian defense ministry said a number of Russian servicemen had been taken to a military hospital with signs of serious poisoning on July 31. Tests showed a toxic substance, botulinum toxin type B, in their bodies, it said.
"On the fact of chemical terrorism sanctioned by the (Ukrainian President Volodymyr) Zelenskiy regime, Russia is preparing supporting evidence with the results of all the analyses," the ministry said in a statement.
