The CBI had on November 9, 2021, registered a case against five accused following the Calcutta High Court order and started the investigation. Earlier, a case in this respect was lodged with the Sabang Police Station.The case is related to the alleged murder of a BJP leader Biswajit Mahesh. The accused allegedly attacked the deceased on the night of May 4, 2021. They came prepared with iron rods and sword with an intention to murder the deceased. After mercilessly beating Mahesh, the accused later threw him in a pond of Gopal Barman.