East Singhbhum district Deputy Superintendent of Police Jacinta Kerketta said Khan was arrested in connection with a pending case filed against him in 2012.
Khan, also JVM East Singhbhum district president, had led a demonstration here in 2012 in protest against killing of people of minority community in Myanmar and allegedly pelted stones at the district headquarters, she said.
A named FIR had been lodged against him in this regard under Bistupur police station.
Khan did not appear before the court which had served a warrant against him about a year ago.