Expressing solidarity with people of North East, Rajya Sabha today passed a resolution seeking investigation against those creating panic, with Prime Minister Manmohan Singh saying those responsible be brought to book.

"The House expresses its serious concern at the feeling of persecution of our brothers and sisters of the North Eastern states, who are leaving various cities and returning to the North East. "...The mischief mongers and anti-national elements behind the electronic campaign to create panic should be urgently investigated by the authorities," the resolution read out by Chairman Hamid Ansari said.

Prime Minister Manmohan Singh said miscreants spreading rumours that have led to people belonging to North East flee from Bangalore, Pune and other parts of the country, should be brought to book and noted that at stake is not just unity and integrity of the country, but also communal harmony.