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An Indian paramilitary soldier has killed six of his colleagues in a shooting incident in the north-eastern state of Manipur, officials say. The incident took place Wednesday night in restive Manipur state's Ukhrul district, about 90 km (55 miles) east of the capital Imphal, where the country's oldest paramilitary force, the Assam Rifles, is deployed for anti-insurgency operations. The soldier shot a comrade dead after an argument. The killer then shot dead five other soldiers who tried to disarm him, before fleeing the scene. "The trooper first trained his assault rifle on a senior officer following an argument, killing him. When five fellow troopers rushed in after hearing gunshots, the berserk soldier sprayed bullets on them," said army spokesman Major Shamsher Jung. Officials are investigating the Wednesday night shooting and have launched a manhunt for the soldier, whose name was not immediately released It was not clear what prompted the killings in Ukhrul dist...