At least three people have been killed and dozens more injured when police in Bangladesh clashed with garment factory workers demanding better pay, police say. Police used batons and tear gas to disperse thousands of protesters in Dhaka and Chittagong. The unrest came a day after demonstrations shut down factories in southern Bangladesh. The workers say wages have not gone up, even though rises were due last month. Police tried to disperse protesters attacking factories and smashing vehicles in Chittagong Export Procession Zone (CEPZ) on Sunday, police official Reza al-Hasan said. Local media said one of the men killed was a 35-year-old rickshaw puller in the southern city of Chittagong, but it was unclear how he had died. All three victims were reportedly shot dead. At least 50 people were injured during the unrest in Chittagong.