An ugly tussle between the Central Bureau of Investigation (CBI) and the state police in Kolkata has blown into a full-fledged war between the Centre and the state, with Chief Minister Mamata Banerjee calling the CBI move to gatecrash into Kolkata police commissioner's official residence as an act worst than Emergency days. The Sunday evening drama began in front of commissioner Rajiv Kumar’s residence as the first batch of CBI officers reached there and tried to enter the house. The state police obstructed their path and later more police came in and took the CBI officers forcibly to the nearby police station. The climax of the drama saw the Chief Minister arriving at the scene with some senior police officers, and a huge posse of state police surrounding various CBI offices in the city restricting the movement of the other CBI officers. Later, Central paramilitary forces were deployed by the Union Home Ministry to give protection to the CBI officers and their offices. Meanwhile, those CBI officers who were detained by the state police were released. Mamata Banerjee took to street agitation against the Modi government accusing it of destroying the constitution.