Tensions are rising along the border with Rwanda and the Democratic Republic of Congo with each side accusing the other of mounting cross-border raids.
The Rwandan government admitted it had killed five soldiers from the DRC on Wednesday after it said a group of them crossed the border into Rwanda and opened fire.
But the DRC (formerly known as Zaire) accused Rwandan troops of entering Congolese territory and seizing one of its soldiers.
The fighting took place in Buhumba in the North Kivu province.
The two neighbouring countries have had a fraught relationship since the 1994 Rwandan genocide when – after losing the war – around two million Hutus, many of who had carried out genocide, set up camp in Eastern DRC.