Police said they suspected the militants behind the overnight killings were members of the Bodo tribe.
"The gunmen entered the house and shot them dead on the spot," a senior police officer in the state capital, Guwahati, with knowledge of the investigation told Reuters. He was referring to an incident in which the militants shot dead three members of a family, including two women, while wounding a baby.
In a second attack, eight people were killed by a group of guerrillas.
Bodo people have frequently clashed with Muslims, they say have illegally entered from neighbouring Bangladesh and encroached on their ancestral lands near the Himalayan kingdom of Bhutan.
Candidates in India's general election, including opposition front runner Narendra Modi, have contributed to anti-Bangladeshi feeling in Assam. Modi, a Hindu nationalist, last week said immigrants from Bangladesh in a nearby state should have their "bags packed" in case he came to power. He accuses the state government of being soft on immigration.
Voting was held over several days in Assam to help security forces handle any violence from several separatist and tribal militant groups active in the state. Polling in the Bodo region ended on April 24, in what residents say was a tight race between a Bodo and a non-tribal candidate.
Police reinforcements were sent to the two districts where the attacks took place, which have a history of sectarian violence. Dozens of police in military style uniforms armed with automatic rifles patrolled the area, television pictures showed.
"The authorities will take firm action against those involved in this crime," said state government spokesman Nilamoni Sen Deka.
Two years ago, dozens of people were killed in clashes between Bodo people and Muslim settlers in the same area and about 400,000 people fled from their villages.
The state government, led by the ruling Congress party, was criticised for not acting quickly enough to stop rioting. The riots stoked tension nationally, triggering sometime violent protests by Muslims in cities across India. About 30,000 migrants from the northeast temporarily returned home after threats of reprisals by Muslims circulated by text message.
COMMENTS (8)
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@Lunacyassailam: I think ET allows your comments through to show the real "secular" face of India! By the way every major country with an immigration policy wants anyone who has the sense and sensibility to live and let live immigrate! Millions are happily living in UK, USA, Canada, Australia etc.
@ali: If saying that makes you feel good then sure lol
Face the facts,since Muslims think that their reality is the only one. Muslims are infiltrating all countries, infiltrating China, infiltrating Myanmmar and in this case Bangladeshis are infiltrating into Bodoland India.Wake up, India , China are huge..non Muslim nations, nobody gives a flying nothing about the plight of destabilizers.Follow the laws of the land, dont infiltrate.Simple conditions, which even if the government doesnt enforce, the people will.Thats what is happening all over the world now.Tell me one country where there are Muslims, which does not want to throw them out?Just one.
@Ali Pakistan calling India a failed state will make the whole world laugh .
Pakistanis were claiming that there is separatist insurgency in Assam. However, the Assamese are targeting migrant / illegal muslims in Assam. There is no separatist insurgency. Pakistanis are confused now and not clear if they should cheer or chastise what is happening in Assam.
India is a failed state
" incredible" India!!!!
Its a Q of aplenty . If I have lots of resources , then I dont mind any one coming in my field. Once my sources start depleting , I will start cutting off - my community , my people , my religion , my extended family .... So please start providing jobs and resources , peace and tranquility will follow .