Norodom Sihanouk (born 31 October 1922) was the King of Cambodia from 1941 to 1955 and again from 1993 until his retirement and voluntary abdication on 7 October 2004 in favour of his son, the current King Norodom Sihamoni. Following his abdication he was known as The King-Father of Cambodia, a position in which he retained many of his former responsibilities as constitutional monarch. He died of a heart attack in Beijing, China, on October 15, 2012.