From The Times:
Mr Marwanâ€™s death will send shockwaves across the Middle East and among some of Britainâ€™s wealthiest people. His associates included Adnan Khashoggi, the arms dealer, Ken Bates, the football club chairman, the Libyan leader Colonel Muammar Gaddafi and the late Tiny Rowland.
If found to be murder, his death will carry echoes of last yearâ€™s assassination of Alexander Litvinenko, the former KGB agent.
In any case, he was close to Nasser and Sadat and must have made his fortune thanks to the connections he developed during that time, in particular when he overlooked the businesses of the Egyptian military in the 1970.