At least 20 people including five policemen were injured in a clash between police and garment workers at Kalurghat in Boalkhali upazila on Monday. The workers of Regent Textile were obstructed whey they tried to enter their factory in the morning for collecting their dues. At one stage, they staged demonstrations in front of the factory. Read: 2 prisoners die at Chattogram jail On information, police rushed to the spot and charged baton to disperse them, triggering a clash, said acting Upazila Nirbahi Officer Tahmina Akter.. The workers also pelted brickbats targeting police during the clash.