The Haryana Police on Sunday used water cannons and tear gas shells to disperse a large group of state government employees holding a demonstration in Panchkula for the restoration of the Old Pension Scheme.

Police took action when the demonstrators, who had gathered on the Panchkula-Chandigarh border, tried to cross over into the Union Territory and march towards the Haryana chief minister`s residence and `gherao` it to press for their demand.