Artykuł / Smolensk crash: Explosions on board before plane hit ground, investigator says:
https://news.sky.com/story/smolensk-crash-explosions-on-board-before-plane-hit-ground-investigator-says-11233792
Film / Nearly eight years after a plane crash in Russia that killed the Polish President, his wife and senior government and military figures, official explanations for the tragedy are still disputed. A Russian investigation blamed pilot error, but a British investigator has told Sky News that he has no doubt there were explosions on board the plane before it crashed:
https://news.sky.com/video/blasts-before-smolensk-plane-crash-11234417