The lawyer identified as Rafiqul Islam was produced at the Sessions Judge's Court, Barpeta today and sent to judicial custody.
The advocate was booked with case no 229/16 under section 471/420/468/34 IPC for making fake NRC documents at Rs 300-500 per person with the help of photocopy of voters' list and fake signature of Barpeta Election Officer.
The incident came to light when NRC documents of one Rejjak Ali were found to be false and the police started an inquiry when a large number of such documents in the district were found to be fake, the police said.
NRC updation work is on in Assam under the orders of the Supreme Court to weed out illegal migrants from Bangladesh, which requires citizens to produce family legacy data before 1971, establishing their Indian citizenship.