Dr Jan Korec, director general of the Slovak Nuclear Power Plant Research Institute (VUJE), died at his home under suspicious circumstances on 23 February. It is thought likely that he had been murdered, having been shot four times in the chest with a silenced machine gun.

Jaroslav Sahul, a spokesman for the Slovak police, said: “Everything indicates that he (Korec) was murdered. His torn shirt proves that he fought with someone. Besides, it is hardly imaginable that someone would manage to shoot themselves dead with a submachine gun.” Police have arrested three people in connection with the killing. The suspected murderer is said to be a businessman from Trnava.