Belarus said on Thursday that a Polish helicopter had violated its airspace.
"Around 1520 (1220 GMT) the aircraft crossed the border of the Republic of Belarus, flew to a depth of up to 1.5 kilometres. At 1622, the helicopter repeatedly violated the state border, going 300 metres deep," the Ministry of Defence of Belarus said in its Telegram channel.
Belarus, Russia's closest ally, said it had scrambled military aircraft in response.
