In a dramatic fall from grace, for one of Egypt's leading businessmen, the property tycoon, Hisham Talaat Moustafa, has been sentenced to death for the murder of his former lover, the Lebanese pop star, Suzanne Tamim. Moustafa, who's also a prominent member of Egypt's ruling party, was found guilty of hiring a hitman to kill the singer, in a case that has gripped the Arab world. From Cairo, Al Jazeera's Amr El-Kahky reports.