Thai Princess Bajrakitiyabha dies after more than three years in coma

The king has five sons, but four by his second marriage were disowned in 1996 and have lived since then with their mother in the US. His fifth son, Dipangkorn, by his third wife, is the presumed heir, although questions have been raised about his ability to perform the role of monarch, in a country where the royal institution carries so much influence.