Security forces arrested influential al Qaeda-linked cleric Abu Mohammad al Maqdisi on Oct. 27, on charges of using the Internet to incite terrorism. Former Prime Minister Marouf al Bakhit recently estimated that up to 4,000 Jordanians are active in the Islamic State. Some 20 Jordanian clerics are said to have taken leadership positions in the Islamic State, including Salafist hardliners Omar Mahdi Zeidan and Saad Hneity.