You already seem to have a grasp of the situation here in India.
People of northeast of India have a mongoloid features, which marks them as different from rest of Indians that have aryan features.
There is some ethenic violence going on in Assam, a state in notheast of India, between Bodo (ethenic Assames people with mongoloid features) and Muslims. So other Norhteastern people living in rest of India are therened by Muslims.
Most of these people are students and migran labours. Their parents got worried about their safety and called them back. Mass hysteria got generated when evey norhteastern person just started exodus from rest of India back to their hometown.