PORT MORESBY (REUTER) - The customary use of young women as compensation payment by tribes in the mountainous South Pacific nation of Papua New Guinea is illegal and must be abandoned, according to a national court judge. National Court Judge Salamo Injia ruled against a tribe`s decision to give 18-year-old Miriam Willingal to another tribe as part of compensation for a shooting death. Injia said the practice was "unlawful, unconstitutional and repugnant to the principles of humanity". The court in the remote mining town of Mt Hagen in central Papua New Guinea heard that Willingal and another woman were given as compensation, along with money and pigs, after her father was shot dead by police as he protected a wanted man. Willingal`s grandfather blamed the April 1996 murder of his son on Willingal`s tribe and demanded compensation. Willingal, a student, was ordered to marry a man from her grandfather`s tribe, but she refused. It is not known what happened to the other woman. Papua New Guinea remains one of the world`s last great frontiers, with thousands of tribes, speaking hundreds of different languages, scattered over its mountainous terrain. While 97 percent of the population are Christian, magic and superstition persist in remote areas, where most people still live in primitive conditions and where bigamy is widespread.