What did the poisoning claim and Voznesensk shelling show?

What did two reports from southern Ukraine tell readers in the run-up to 22 August 2022? They pointed in different directions, yet both belonged to the southern campaign and to the accounts of alleged war crimes surrounding it.

On 20 August 2022, regional governor Vitaliy Kim said Russian shelling of a residential building in Voznesensk, in Mykolaiv Oblast, had injured nine civilians, four of them children. The claim came from a Ukrainian official about civilian harm in a populated area.

The same day, Russia said a number of its soldiers in Zaporizhzhia had been poisoned by Ukraine, and that tests showed Botulinum toxin type B in their bodies. That was an accusation from one party to the war, and it was presented as a medical finding.

The two items illustrate how the southern front was described by each side: Ukrainian authorities reported civilian casualties from shelling, while Russia put forward a poisoning allegation against Ukraine. Both were attributed to the parties making them, and the reports gave no further detail on the poisoning claim beyond Russia's own statement of the test results.