(IRIN) – The UN mission in Democratic Republic of Congo (DRC) plans to send more troops to the southern province of Katanga to respond to the humanitarian crisis unfolding there, even as peacekeepers continue to combat elusive groups along the borders with Uganda and Rwanda. DRC officials and civil society groups have been calling for the UN to intervene more strongly in Katanga, where armed groups calling for the province to secede have torched scores of villages and clashed with government forces. As many as 400,000 people have fled their homes.