This Reddit thread claims that the Soviet secret police used hidden x-ray machines to give people cancer in order to remove them quitely from power. I've heard that claim colloquially before but have hard time believing it.
Apparently, in the early '60s the communist leaders of some European countries also received the same treatment from the Soviets, who wanted to get rid of them. They were invited to Moscow at some conferences and put to wait in some hallways that had X-ray machines embedded in the walls and received high doses of radiation. Gheorghiu-Dej, the leader of Romania, died after such a visit from liver cancer.
Another similar claim in the same Reddit thread:
the secret police in Communist Romania subjected the leaders of a 1977 coal miners' strike to 5-minute chest X-rays to ensure that they developed cancer
Yet another claim:
Stasi perfected the method to a ray gun constantly firing at the living quarters of a political prison. Allegedly.
Is it true that secret police in the Eastern block used X-ray machines to give people cancer?