Aris Munandar ( aka Sheik Aris ) is a Jemaah Islamiyah associate linked to Bashir . He is believed to have assisted the Bali bomber Amrozi in acquiring some of the explosives used in the Bali bombings . Philippine intelligence considers Munandar to be associated with Mohammad Abdullah Sughayer , a Saudi national Abu Sayyaf Group in southern Philippines . Munandar is still at large . A report by the United States-Indonesia Society describes the arrest of Amrozi and other suspects . General Pastika ordered his men to make the arrest early the next morning , November . Amrozi was asleep in the rear of the house . According to Greg Barton 's account , Amrozi did not attempt to escape , but laughed instead , later exclaiming , '' '' Gosh , you guys are very clever , how did you find me ? " '' Amrozi 's mobile phone , a particularly important piece of evidence , was seized during his arrest . Bags of chemical ingredients for bombs were found in his workshop and soil samples taken from outside his home showed traces of the primary chemical used in the Sari Club bomb . Police found receipts for the purchase of chemicals used to make the bombs , as well as a list of expenses incurred in making the bombs . Further search of Amrozi 's home revealed copies of speeches by Osama bin Laden , and Abu Bakar Bashir , the radical Indonesian Muslim cleric reputed to be the leader of Jemaah Islamiyah . The speeches exhorted listeners to wage jihad . Police also uncovered training manuals on ambush techniques and numerous articles on jihad . Under questioning Amrozi revealed the names of six others involved in the bombing : Ali Imron , Imam Samudra , Dul Matin , Idris , Abdul Ghani and Umar Patek . But Amrozi 's mobile phone proved to be the real catch . Indonesian investigators were able to print out a list of calls he had made immediately before , during and after the bombing , as well as the names and telephone numbers in the phone 's memory . Pastika kept Amrozi 's arrest secret for two days . After it was announced , Polri monitored the sudden flurry of communications among numbers listed in Amrozi 's telephone before the calls abruptly ceased . The investigators were able to identify the location of a number of the telephones , leading to a series of arrests . Indonesian authorities also believe more suspects remain at large . In 2005 , Indonesian police arrested 24 additional people suspected of involvement in the Bali attacks and a 2003 bombing of the Marriott Hotel in Jakarta
2003 bombing of the Marriott Hotel
2003 Marriott Hotel bombing
2002 Bali bombings