Motijheel and its adjacent areas witnessed a huge traffic jam on Tuesday morning as workers of a RMG factory blocked roads protesting relocation of their factory to Keraniganj. According to the workers, the authority of Olio Apparels Ltd has relocated the factory from North Kamalapur area in the capital to Keraniganj without any prior notice. At least 400 to 500 workers put up barricade at different points in Motijheel area at 8:30 am, hampering movement of vehicles, said Yasir Arafat, officer-in-Charge of Motijheel police station.