Those not satisfied with the decision made can appeal to a designated Foreigners Tribunal, the Union Minister of State for Home Affairs said

No detention camps have been constructed in Nagaland for those unable to prove their citizenship under the National Register for Citizens (NRC), Union Minister of State for Home Affairs Nityanand Rai said in a written reply to a question in the Rajya Sabha today.
The Government of Assam had sought for re-verification of certain populations under NRC in the districts bordering Bangladesh but the Supreme Court had not agreed to this, Rai said.
In his reply, the minister said that any person who was not satisfied with the outcome of decisions of the claims and objections of the NRIC process may appeal before a designated Foreigners Tribunal constituted under The Foreigners (Tribunal) Order, 1964.

This can be done within a period of 120 days from the date of such an order, and after the disposal of appeal by the Tribunals, the names shall be included or deleted, as the case may be, in the NRIC of the State of Assam, Nityanand Rai said.