Ethiopia's Prime Minister Abiy Ahmed said on Thursday he had deployed forces to the western Benishangul-Gumuz region, a day after gunmen killed more than 100 people in the area, which has seen regular ethnic violence. On Wednesday, the state-run Ethiopian Human Rights Commission said gunmen had killed over 100 people in a dawn attack in the village of Bekoji in Bulen county in the Metekel zone, an area where numerous ethnic groups live. 'The massacre of civilians in Benishangul-Gumuz region is very tragic,' Abiy said on Twitter. 'The government, to solve the root causes of the problem, has deployed a necessary force.'