He wrote Sunday on his Twitter account that he sacked Tarek Al-Suwaidan "for admitting he belongs to the Brotherhood terrorist movement."
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Al-Suwaidan, a Kuwaiti, was the director general of Al-Resalah channel, which belongs to Alwaleed's Rotana Group - a large pan-Arab media conglomerate based in Riyadh.
Al-Suwaidan has sharply criticized Egypt's military-backed government and voiced support for deposed President Mohamed Morsi on his Twitter account.
Saudi King Abdullah, whose country has pledged $5 billion in aid to Egypt's interim leaders, supported Cairo's crackdown on the Brotherhood, saying the kingdom stood by Egypt's fight against "terrorism and strife."
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