 Publicly humiliated by Gaddafi's circle, he suffered a stroke that led him to seek medical treatment in the UK in 1988.He then travelled to Europe with his second son, Prince Mohammed El Hassan El Rida El Senussi, and died in 1992 in London surrounded by his family.When, on 18 June 1992, the last will of the late Crown Prince was read at a press conference at the presence of the press and of his five children, Prince Mohammed was formally appointed as the legitimate heir to the throne of Libya.