India has repatriated 175 migrants to Bangladesh after rescuing them from the sea earlier this year.
Most of the migrants are believed to be ethnic Muslim Rohingyas, who had earlier escaped from Burma into Bangladesh.
Officials say 49 migrants were sent back earlier this year. More than 100 others are believed to remain on India's Andaman and Nicobar islands.
The returnees are a part of a group of 448 Bangladeshi and Rohingya migrants rescued by Indian authorities in January. They allegedly had been set adrift in the deep sea by the Thai military.
About 400,000 Rohingyas live in Muslim-majority Bangladesh, with about 28,000 housed on the border with Burma.
The Rohingya have fled Burma to escape allege abuse and persecution. Burma does not recognize the group as an ethnic minority and denies them citizenship and other basic rights.