Otaibi was identified as the new chief of "Al-Qaeda in the Arabian peninsula" on one of the main Internet sites used by Islamists, where a biography of him was also posted. One contributor posted a section for greetings to the alleged new leader.
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But the Washington-based Saudi Institute, which regularly publishes news about Saudi Arabia, said in an email received by AFP that Otaibi, 33, had become Al-Qaeda's new chief in the kingdom, saying this "confirmed" its earlier claim that former leader Saleh al-Oufi had been killed by Saudi security forces.
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Otaibi is on a list of 26 most-wanted militants in Saudi Arabia. Nine of those, including Oufi, remain at large or unaccounted for, while a tenth, a Moroccan national, was reported by Belgian authorities in July to have been arrested in Belgium.
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