Sonitpur, Dec 28 (ANI): Life returned back to normalcy as tea plantation workers in Assam returned to work after at least 80 people were killed by a tribal militant group. Militants fighting for a separate homeland for indigenous Bodo tribesmen went on a killing spree in Assam on Tuesday, killing 80 people in four attacks in the space of an hour, the deadliest violence in months. Hundreds of plantation workers armed with spears and bows and arrows defied a curfew imposed in response to the rebel attacks and surrounded police stations in Sonitpur district, the area worst hit by the militant violence, saying authorities had failed to protect them. Two days since the army took control of the area, the tea plantation workers in Biswanath Chariali town of Sonitpur district are trying to put the attack behind them.