All the officials arrested, including the then Port Officer, Karwar Port, then Assistant Conservator of Forests, Ankola Sub-Division, Karwar, and then Range Forest Officer, Ankola, are in judicial custody.
The chargesheet was filed in a CBI Special Court, the central agency said in a statement.
It was alleged that the accused had conspired for exporting 34555.06 MT of iron ore from Belekeri port, which was seized by the Forest Department and handed over to the port authorities for safe custody, by violating the orders of Karnataka High Court.