Belarus has summoned the Ukrainian ambassador, saying it had shot down a Ukrainian air defence missile in Belarusian territory.
It happened during one of Russia’s heaviest aerial onslaughts against Ukraine so far.
Footage from Belarusian state television appeared to show missile debris in a field.
A Ukrainian military spokesman said the incident was “the result of air defence”.
Belarus – a key ally of Russia – demanded that Kyiv carry out a full investigation, after the S-300 rocket came down near the border.
It is the first time Belarus has shot down a Ukraine missile since the Russian invasion in February.
