 Brief military clashes took place in 1900 and 1906.The Dutch proceeded to restructure the administrative divisions of Belu in 1915-16, trying to use traditional rulers as zelfbestuurders (rajas under colonial surveillance).The Maromak Oan, Baria Nahak, died in 1925, and the Dutch unsuccessfully tried to use his nephew Seran Nahak as Raja of Belu in 1925-30.