Al Fahim previously helped broker a deal for Man City
Arab businessman Sulaiman Al Fahim has completed his takeover of Premier League strugglers Portsmouth.
The 32-year-old has become the club's new sole owner after a buy-out believed to be worth £60m.
"Sulaiman Al Fahim welcomes this agreement and looks forward to helping the club build on its impressive history," his spokesman said.
Al Fahim had already been named Pompey chairman after passing the Premier League's fit and proper person test.
Portsmouth released a statement saying: "The chairman of the club would like to extend his gratitude to the players, staff and supporters of Portsmouth FC who have shown an extraordinary level of commitment and loyalty to this great club."
A source close to outgoing owner Alexandre "Sacha" Gaydamak told the BBC: "Sacha is delighted the deal has been finalised and is really pleased the club can now move forward in the best possible way.
"He would also like to thank Portsmouth's supporters for their continuing loyalty to the team and wishes them all the best for the future."
I am very, very disappointed, but its Sacha's club, he decides
Portsmouth chief executive Peter Storrie
The news of Al Fahim's takeover comes a week after the club revealed it was in talks with a new consortium led by chief executive Peter Storrie.
Storrie said he was disappointed that his consortium had missed out on the chance to takeover the club.
"My group is very unhappy," he told radio station 107.4 The Quay. "A meeting was scheduled for 8.30am, but Sacha called me and asked to reschedule for 12. I asked him if there was a problem, as my people were getting nervous and he said 'no'.
"I am very, very disappointed, but its Sacha's club. He decides."
Storrie pledged to continue working on some transfer deals but said he would take some time to evaluate his own position following Wednesday's developments.
He suggested co-operation with Al Fahim might be tricky.
"I really don't know whether that would be possible, but we just have to wait for everyone to calm down," he said.
Al Fahim agreed to buy Pompey from Gaydamak in May after the Franco-Russian announced he wanted to sell because he was unable to devote sufficient time to club.
Al Fahim finally completed a period of financial and commercial due diligence of the club last month.
He takes over a club in turmoil both on and off the field.
Paul Hart's men have lost all three of their league games this season, scoring just one goal.
The club were forced to sell England internationals Glen Johnson and Peter Crouch this summer to reduce a reported debt of £44m, while centre-back Sylvain Distin is believed to be on the verge of a move to Everton.
Al Fahim was the initial figurehead of the Abu Dhabi United Group when they took control of Manchester City in the summer of 2008, although he is no longer involved at Eastlands.
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