 The Sultans of Pontianak, Sambas, Ketapang, Soekadana, Simbang, Koeboe, Ngabang, Sanggau, Sekadau, Tajan, Singtan, and Mempawa were all executed by the Japanese, respectively, their names were Sjarif Mohamed Alkadri, Mohamad Ibrahim Tsafidedin, Goesti Saoenan, Tengkoe Idris, Goesti Mesir, Sjarif Saleh, Goesti Abdoel Hamid, Ade Mohamad Arif, Goesti Mohamad Kelip, Goesti Djapar, Raden Abdul Bahri Danoe Perdana, and Mohammed Ahoufiek.They are known as the "12 Dokoh".In Java, the Japanese jailed Syarif Abdul Hamid Alqadrie, the son of Sultan Syarif Mohamad Alkadrie (Sjarif Mohamed Alkadri).