Fired a what at whom?

https://apnews.com/article/russia-ukraine-g-20-summit-nato-biden-government-and-politics-c76bead57a11bc8397a30ee7bb06264e

Poland, NATO say missile strike wasn’t a Russian attack

PRZEWODOW, Poland (AP) — NATO member Poland and the head of the military alliance both said Wednesday that a missile strike in Polish farmland that killed two people appeared to be unintentional and was probably launched by air defenses in neighboring Ukraine.

“Ukraine’s defense was launching their missiles in various directions, and it is highly probable that one of these missiles unfortunately fell on Polish territory,” said Polish President Andrzej Duda. “There is nothing, absolutely nothing, to suggest that it was an intentional attack on Poland.”

Edit: downvoted for correcting misinfo quoting NATO and the Polish government, that’s pretty funny :P