NEW DELHI (Reuters) - Indian authorities are seeking to strip at least four million people - most of them Muslims - of their citizenship as foreign immigrants, the ruling party has adopted a hardline Hindu nationalist agenda that undermines pluralism in the country.

The British newspaper said that the Indian authorities launched a campaign to search for what they call illegal immigrants in the poor mountain state of Assam, which lies near the border with Bangladesh and Myanmar, and the population of Assam 33 million people.

She added that the majority of the population, which the authorities seek to consider as foreign immigrants, were born in India and enjoy full citizenship rights, including the right to vote.

Authorities have arrested hundreds of people since the campaign, which began years ago and ends at the end of this month, on suspicion of being foreign immigrants, including army veterans, according to the newspaper, which said that the authorities are planning to establish huge new concentration camps for them.

The Independent said in its report that the government of Prime Minister Narendra Modi is continuing to implement its policy despite the warning of human rights activists and lawyers that the actions of the authorities may push dozens of suicide for fear of arrest and deprivation of citizenship.

The report pointed to growing concern among Muslims about the campaign, which is part of a long-term strategy in which Moody seeks to turn India into a Hindu nationalist state.