External Affairs Minister Sushma Swaraj on Monday said that Iran has released 15 Indian fishermen who were detained with their Bahraini boats last year.

She also thanked the Indian Embassy in Tehran, appreciating their "good work" for facilitating the release.

The fishermen, working for some Baharainians, were detained for entering the Iranian waters without permission.

They were said to be confined to their boats since their arrest on September 22.