THIS REQUIRES BETTER SOURCING
As I have noted here before, Visegrad is a far right anti-immigrant site that also has been a good source for news regarding the Ukraine war. As it happens, they have predictably been pushing the Charlotte murder story heavily.
But overall their posts about military events in Ukraine and Poland have been pretty reliable. Still, this would be a serious escalation if true, so hoping they are overstating whatever is actually happened. There have been a handful of Russian drones do damage in Poland to date, though all seem to have deniability baked in (guidance failure or such and most damage to farms and buildings, not people).