Yun Yat, alias Comrade At, was the wife of Son Sen

Son Sen

Son Sen was a Cambodian Communist politician and soldier. A member of the Central Committee of the Communist Party of Kampuchea/Party of Democratic Kampuchea, the Khmer Rouge, from 1974 to 1992, Sen oversaw the Party's security apparatus, including the Santebal secret police and the notorious...

, defence minister of Democratic Kampuchea

Democratic Kampuchea

The Khmer Rouge period refers to the rule of Pol Pot, Nuon Chea, Ieng Sary, Son Sen, Khieu Samphan and the Khmer Rouge Communist party over Cambodia, which the Khmer Rouge renamed as Democratic Kampuchea....

. On October 9, 1975, the Standing Committee of Communist Party of Kampuchea

Communist Party of Kampuchea

The Communist Party of Kampuchea, also known as Khmer Communist Party , was a communist party in Cambodia. Its followers were generally known as Khmer Rouge .-Foundation of the party; first divisions:...

 placed her in charge of information and education inside and outside of the country. In 1977, she was appointed as information minister after Hou Nim's arrest and execution.

On June 10, 1997 Khieu Samphan

Khieu Samphan

Khieu Samphan was the president of the state presidium of Democratic Kampuchea from 1976 until 1979. As such, he served as Cambodia's head of state and was one of the most powerful officials in the Khmer Rouge movement, though Pol Pot was the group's true political leader and held the most...

 (former State Presidium Chairman of Democratic Kampuchea) declared that Yun Yat and Son Sen had been arrested as spies of Hun Sen

Hun Sen

Hun Sen is the current Prime Minister of Cambodia.He has been the sole leader of the Cambodian People's Party , which has governed Cambodia since the Vietnamese-backed overthrow of the Khmer Rouge in 1979...

 and Vietnam

Vietnam

Vietnam – sometimes spelled Viet Nam , officially the Socialist Republic of Vietnam – is the easternmost country on the Indochina Peninsula in Southeast Asia. It is bordered by China to the north, Laos to the northwest, Cambodia to the southwest, and the South China Sea –...

, and declared as traitors. Yun Yat, Son Sen and eight relatives of them were executed on June 15, 1997.