Seven persons were also arrested, police said.
The trouble started this morning when male and female passengers launched seperate sit-ins on the tracks at the Khardah station on the Sealdah-Krishnagar section of Eastern Railway, a GRP official said.
Women passengers were protesting against the Railway's decision to convert four EMU coaches of ladies special, Ranaghat Matribhumi local, into general compartments, while men squatted in support the decision.
As the protests turned acrimonious, the railway station turned into a war zone with the groups exchanging brickbats.
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When police and GRP failed to disperse the protesters, police resorted to teargas shelling and lathi charge to disperse the protesters, Commissioner of Police Barrackpore Police Commissionerate, Niraj Kumar Singh, who rushed to the station said, adding more police had been called in to control the law and order situation.
Train services on the Sealdah-Krishnagar section was disrupted till 12-20 PM.
Seven arrests have been made, Singh said, adding that injured police personnel were hospitalised.