Antara Foto/Fakhri Hermansyah/ via REUTERSJAKARTA, Aug 15 (Reuters) - Indonesia's counter-terrorism unit on Tuesday announced the arrest of an alleged Islamic State (IS) loyalist suspected of planning an attack on the headquarters of the police's security division. "We were shocked by the evidence we found," Aswin told a news conference. "The movement of ISIS or supporters of ISIS ... has never stopped even when it's not visible to our eyes that they congregate," he said, referring to the Islamic State. Indonesia, the world's largest Muslim-majority nation, suffered its worst militant attack in 2002 when two nightclubs on the island of Bali were bombed, killing 202 people, mostly foreign tourists. Analysts say the threat of extremist attacks has since diminished significantly and while arrests of suspected extremists do take place, pledges of allegiance to Islamic State have been rare.

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Persons: Antara, Aswin Siregar, Aswin, Todd Elliott, Stanley Widianto, Kate Lamb, Martin Petty Organizations: Islamic, REUTERS, ISIS, Concorde Consulting, Thomson Locations: Indonesian, Islamic State, Iraq, Syria, Bekasi, West Java, Indonesia, REUTERS JAKARTA, State, Jakarta, Bali