The Citizenship Amendment Bill was passed by the Parliament and signed into law by the President this month.
According to the Citizenship Amendment Act (CAA), members of Hindu, Sikh, Buddhist, Jain, Parsi and Christian communities who have come from Pakistan, Bangladesh and Afghanistan till December 31, 2014 following religious persecution there will get Indian citizenship.
The OIC urged the Indian government to ensure the safety of the Muslim minority and the protection of their religious sites.
It "reaffirms the crucial importance of upholding the principles and obligations enshrined in the Charter of the United Nations and relevant international covenants that guarantee the rights of minorities without any discrimination," the statement said.