Nigeria is withdrawing its 120-strong police contingent serving with the UN peacekeeping mission in the Democratic Republic of Congo's capital, Kinshasa. The UN launched an investigation into sexual harassment allegations three weeks ago and the entire unit were withdrawn from their duties. Nigerian police spokesman Haz Iwendi said 10 officers were accused of sexually harassing local women. "When one is contaminated, the whole bunch is contaminated," he said. Speaking from Nigeria, he said a senior police officer had already been sent to DR Congo to bring them home.