凯山·丰威汉
In 1978, the government reported that Vatthana, Queen Khamphoui, and Crown Prince Vong Savang had died from malaria. The "World Press Review" reported that they had suffered from the effects of forced labor and starvation. More recent accounts suggest that the King died in mid-March 1980. However, according to Kaysone Phomvihane, Vatthana died in 1984, at the age of 77. Following the deaths of Vatthana and the Crown Prince, the King's youngest son, Sauryavong Savang, became the head of the Laotian royal family, acting as regent for his nephew Crown Prince, Soulivong Savang, until the regent died in Paris in 2018.