By A Staff Reporter : Stones pelted on Union Minister of State for Home Nisith Pramanik's convoy at Dinhat in Cooch Behar.Shots were fired at the convoy.The bomb was thrown.The glass of the car is broken.The Union Minister of State was shown a black flag.Accused Trinamool.The ruling party claimed that Trinamool's party office is vandalized by BJP.Trinamool-BJP supporters are involved in clashes.Dinhata has become a battlefield.Police are struggling to handle the situation. Tear gas is thrown d to stop the unrest.