Along with the rest of his family , he was killed on the orders of Pol Pot during a 1997 factional split in the Khmer Rouge .
Sen was married to Yun Yat , who became the Party 's minister of education and information .
Along with the rest of Sen 's family , Sen was killed on the orders of Pol Pot during a 1997 factional split in the Khmer Rouge .
Sen was married to Yun Yat , who became the Party 's minister of education and information .