Dulmatin (6 June 1970 – 9 March 2010) was a senior figure in the militant Islamic group Jemaah Islamiyah (JI) and one of the most wanted terrorists in Southeast Asia.[1] He was also known as Amar Usmanan, Joko Pitoyo, Joko Pitono, Abdul Matin, Pitono, Muktarmar, Djoko, and Noval. He also had the nickname "Genius". Dulmatin was an ethnic Javanese with a height of 172 cm, weighing 70 kg, with a brown complexion.