Al Mustapha should rot in prision. He was one of Abacha's boys and he deserves nothing less than Abacha would have dished out. In fact, Al Mustapha should be taken out of his cell and tortured to death. Stupid trash.
These men think its all fun and games murdering Nigerians until the table turns, then they have their relatives in the UK (YOU) write stupid threads about how they have been in jail 8 years (not 9 like you said). Did Al Mustapha not try and shoot-down Obj's helicopter so that he can topple the government? So that he can return Nigeria back to Abacha-style era? If the sadist had succeeded, thousands of innocent Nigerians will be in umarked jails, and hundreds more will have disappeared entirely.
Al Mustapha is a dangerous man. I don't care how many of his relatives die (haha, his father just died a few months ago and he couldn't go for burial ). It is best that they leave them in jail (trial or no trial) because there are many Nigerians that would do them harm if they are unfortunate to come across them.