A fierce clash between agitating workers of a knitting factory and police at Ishwardi EPZ on Sunday left more than 100  people, including 20 policemen, injured, police said.
Local sources said the clash ensued when agitating workers of Roshita Knitting Factory demanding higher wages became violent and attacked policemen who tried to control the situation.
The situation became worse with the spread of a rumour that a worker was killed in police firing, prompting hundreds of local people to join the unruly workers who attacked policemen on duty.
Police shot blank fires and tear gas shells to disperse the agitating workers.
Witnesses said the clash continued for hours together, leaving scores of people, including some policemen, injured.      
Officer-in-charge of Ishwardi police station Akbar Ali claimed the unruly workers of the factory had attacked the policemen deployed to bring the situation under control. He said 20 policemen including a sub-inspector were injured in the clash.
The workers claimed that police started beating them mercilessly and shot fires and tear gas shells on their demonstration.
Some 52 injured workers were admitted to Ishwardi upazila health complex and Ishwardi Railway Hospital.
Police picked up 81 workers from the scene to bring the situation under control, a senior police official said.
A huge contingent of police and RAB were deployed in the EPZ area to guard against further violence, police said.