Hesham al-Sa`eedni was arrested on Monday. He is believed to be an Egyptian citizen and a senior member of the Tawheed And Jihad group linked to al Qaeda, the sources said.
Israeli daily Haaretz reported on Thursday that al-Sa`eedni`s group was involved in a series of attacks in Egypt`s Sinai peninsula, among them a 2006 attack on a hotel that killed 19 people.
Hamas, which has in the past denied any al Qaeda presence in Gaza, has been trying to keep other Islamist groups in check following a devastating Israeli military offensive in 2009.
Hamas officials were not immediately available for comment. (*)
Editor: Kunto Wibisono
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