Guwahati, Nov. 1 -- Several people were detained during a protest against the proposed 11,200-MW Siang Upper Multipurpose Project (SUMP) in Arunachal Pradesh outside Arunachal Bhawan in New Delhi on Saturday, with some protesters remaining in police custody late that night, according to Himkhand.

A Himkhand member said some of those detained had been released after being taken to Chanakyapuri police station, while others were still being held at Baba Haridas Nagar police station near the Delhi-Haryana border.

The organisation said women protesters were also taken into custody after 9 pm. It alleged that all protesters were asked to sign a form under Section 35(3) of the Bharatiya Nagarik Suraksha Sanhita (BNSS).

Lawyers representing th...