The confirmation came after Lulz Security, a loosely aligned group of hackers, said it had carried out the attack for fun and posted files online.

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Due to the considerable time commitment and uncertainty of outcome, we will continue our due diligence and work toward providing a definitive proposal, only upon receipt of written confirmation from the Special Committee of the Board of Directors that the Investor Group has been determined to be an Excluded Party in accordance with the Merger Agreement.

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"We never received any confirmation, acknowledgment or denial from our military sector in the front, " the group said.

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The Shafiq campaign criticised the Islamist group for its victory announcement, saying it represented "bizarre behaviour" ahead of any official confirmation of the final result.

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