Arupjyoti Saikia, a faculty of Social Science and Humanities Department of the IIT Guwahati, was on Saturday reportedly, interrogated by the NIA for his alleged violation of the newley amended citizenship laws of the country.
Mr. Saikia was summoned to the National Investigation Agency's office located at Sonapur, outskirts of Guwahati, where he was quizzed by the agency for sometime.
A researcher on the Brahmaputra river and alumnous of the Delhi Univerisity, Mr. Saikia had pursued extensive study on the forests of Assam also.
He will be questioned by the NIA on Monday, too, sources revealed.
Meanwhile, many prominent persons including former National Book Trust Language Editor Paresh Malaker condemned the NIA's action on Saikia.
Mr. Malakar in a facebook post strongly criticised the premier investigation agency's summon to Saikia.