Son Sen
He was murdered on 15 June 1997, alongside 13 members of his family, including children, on orders of Pol Pot, who at the time was fighting his last battle to regain control of the Khmer Rouge from Ta Mok. Pol Pot is thought to have believed that Sen was in negotiations with government forces to surrender, specifically being in contact with then-Second Prime Minister Hun Sen; he ordered Son Sen and his family to be shot, after which trucks drove over their bodies.