The official source of the poll body said that there is no evidence of an attack carried out on Banerjee.
Banerjee also challenged the BJP to arrest 20 lakh Trinamool Congress workers in Bengal, including herself.
At a rally here in South Dinajpur district, the Trinamool Congress (TMC) chief said around 12,000 farmers had committed suicide in the country for failing to repay their loans.
She criticised the BJP government at the Centre over the alleged growing intolerance in the country, farmer suicides and rise in prices of essential commodities.
Assam minister Chandra Mohan Patowary termed Mamata's speech against the NRC update "politically motivated" and made to "appease her vote bank".
The police FIR sparked an angry response from the Trinamool Congress(TMC) which said such an action would not stop her from fighting for the cause of the Bengalis.
Top female cop, who called West Bengal CM Mamata Banerjee 'mother of Jangalmahal', resigns after transfer
Bharati Ghosh tendered her resignation to West Bengal DGP Surajit Kar Purakayasta on Thursday, which is yet to be accepted.
Centre to hold 74 per cent stake in Tajpur port, build bridge across Muriganga: West Bengal CM Mamata Banerjee
Currently, people planning to visit to the island have to travel by road to Harwood Point (Lot 8 Jetty) in Kakdwip and cross the Muriganga by ferry.