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United Nations, July 25 (IANS) Humanitarians said they are concerned about armed groups in Colombia displacing or restricting the movement of civilians. The UN Office for the Coordination of Humanitarian Affairs (OCHA) said its partners and official reports say more than 120,000 people were displaced or had their movements restricted in the first half of the year, Xinhua news agency reported. "We are also worried about the potential for an increase in armed violence in Colombia's border regions, which would only increase humanitarian needs," the office said. The humanitarians said 8.3 million people out of 52 million in Colombia need…