Clashes broke out late on Sunday between students of New Delhi's Jawaharlal Nehru University (JNU), who were protesting against a fee hike, and youth wing members of a group closely tied to India's ruling Bharatiya Janata Party (BJP), injuring over a dozen people, witnesses and officials said.
Sahiba Mazid, who spoke by telephone from inside one of the university hostels, said many men wearing masks and carrying batons had entered the hostel.
JNU students on social media blamed members of the Akhil Bharatiya Vidyarthi Parishad (ABVP), the youth wing of the Hindu nationalist Rashtriya Swayamsevak Sangh - the ideological parent of India's ruling BJP.