(VOI) -- Police forces on Monday arrested four suspected gunmen in the city of Kut, a police source said. "Policemen arrested a four-member gang, accused of killing and looting operations in the city of Kut," the source, who preferred to be anonymous, told Aswat al-Iraq - Voices of Iraq - (VOI). "The operation was based on a tip-off on their criminal activities, and the detainees are being subject now to investigation," he added.