In its affidavit, the government accused the Rohingya of taking advantage of the porous borders in the east with organised smuggling of people, human trafficking and hawala operations.

Many of them have acquired fake Indian identity such as PAN cards and voter ID cards, it claimed.

The Centre said an organised illegal influx of Rohingya into India was happening through Benapole-Haridaspur (West Bengal), Hilli (West Bengal) and Sonamora (Tripura), Kolkata and Guwahati.

Appearing for Maitur Rahman, a native of Assam, advocate Somiran Sharma intervened to argue that allowing the Rohingya to stay might kindle ethnic tensions in the northeastern State.

“Many of the Rohingya figure in the suspected sinister designs of ISI/ISIS and other extremist groups who want to achieve their ulterior motives in India, including that of flaring up communal and sectarian violence in sensitive areas,” the affidavit said.

The Rohingya, with militant background, were found to be very active in Jammu, Delhi, Hyderabad and Mewat, it said. “Radicalised” Rohingya may cause violence on Indian Buddhists, the government warned.

But mostly, the government feared that the “illegal immigrants” would exhaust the national resources.