Darfur rebels have attacked a Sudanese military base in West Darfur state, killing 78 soldiers, a rebel leader said, accusing Chadian insurgents of working alongside Sudan's armed forces. Khalil Abdallah, political leader of the Darfur rebel National Movement for Reform and Development (NMRD), on Saturday said 17 soldiers were taken prisoner in the attack on the town of Arm Yakui, some 30 km northwest of West Darfur's main town el-Geneina. A Sudanese army source confirmed there was an attack on one of their bases in the area but could not give casualty figures. "We attacked the town of Arm Yakui today - a Sudanese military base," Abdallah told Reuters. "We killed 78 soldiers and took 17 prisoners," Abdallah said, adding his group lost two men with five injured.