NEW DELHI — India has blamed Pakistan for posting threatening messages on the Internet that triggered a mass exodus from Bangalore and Mumbai by migrants fleeing to their homes in the northeast. “Our agencies have discovered that bulk of these messages have been uploaded on various websites in Pakistan,” Home Secretary R.K. Singh told reporters late Saturday. “This is a first of its kind and we believe that it is highly reprehensible.” The exodus was sparked by threats sent via mobile phones and the Internet that people from northeastern Assam state would be attacked by Muslims after the end of the holy month of Ramadan in reprisal for recent ethnic violence. Meanwhile, two northeast Indians fleeing home died and nine others were injured after being pushed from a moving train on Sunday, an Indian Railways official said, raising the prospect of more communal clashes. The incident happened near the Jalpaiguri railway station in the northern part of the state of West Bengal, close to Assam, the official said. “Two persons died, four are critically wounded and five suffered minor injuries,” the Indian Railways official said, declining to be named as he was not authorised to speak to the media. Local media reports estimated that over 35,000 people have fled the cities of Bangalore and Mumbai in recent days. Extra trains were arranged to accommodate panicked students and workers. Three weeks of clashes in remote Assam between members of the Bodo tribal community and Muslims have claimed at least 80 lives and displaced more than 400,000 people. Singh said India would register a formal protest with Pakistan. “We will raise this issue with Pakistan... I am certain that they will deny out of hand but our technical people are definite,” he said. India has banned bulk text messages temporarily to try to halt the spread of threats and incendiary rumors. Police in southern city of Bangalore have also arrested three people for spreading images and video clips across India. The images of atrocities allegedly on Muslims sparked tension and people hailing from the northeast were attacked in western and southern cities. Prime Minister Manmohan Singh said those who were fanning the rumors should be punished, saying “communal harmony” was at stake. — Agencies