STORY: The footage from broadcaster TVN also showed broken windows on surrounding buildings of a grain-drying facility in the village of Przewodow where the missile hit on Nov. 15.
Poland and other Western states have said the strike was from Ukrainian air defence missile that went astray in pursuit of a Russian missile.
Kyiv cast doubt on that and sent investigators to the site. Poland's border guard said on Sunday investigators had finished their work.
Warsaw, Kyiv and their Western allies have said that ultimate responsibility for the explosion lies with Russia, which invaded Ukraine in February and has been pounding Ukrainian energy facilities with missiles.
The victims, named by Polish media as 62-year-old Boguslaw W. and 60-year-old Bogdan C., were buried in Przewodow on Saturday (November 19) and Sunday respectively.