Jensen drowned after being struck by the Indian Ocean tsunami on 26 December 2004, while he and his family were on holiday at the La Flora Resort hotel in Khao Lak. His body was discovered on the beach the following day. His uncle, then-Crown Prince Maha Vajiralongkorn, identified his body and flew the rest of the family to Bangkok. On 30 April 2005, he received a royal funeral attended by his grandfather the King and virtually every member of the Royal Family.