For the purposes of Availing of the facilities of opening and maintenance of bank accounts and investments in shares/securities in India : A foreign citizen (other than a citizen of Pakistan or Bangladesh) is deemed to be of Indian origin, if, he, at any time, held an Indian passport, or he or either of his parents or any of his grand parents was a citizen of India by virtue of the Constitution of India or Citizenship Act, 1955 (57 of 1955).
Note : A spouse (non being a citizen of Pakistan or Bangladesh) of an Indian citizen or of a person of Indian origin is also treated as a person of Indian origin for the above purposes provided the bank accounts are opened or investments in shares/securities in India are made by such persons only jointly with their NRI spouses.
For investments in immovable properties: A foreign citizen (other than a citizen of Pakistan, Bangladesh, Afghanistan, Bhutan, Sri Lanka or Napal), is deemed to be of Indian origin if, he held an Indian passport at any time, or he or his father or paternal grand-father was a citizen of India by virtue of the Constitution of India or the Citizenship Act, 1955 (57 of 1955).