Bloodied students, broken doors: Photos that describe JNU violence

The mob also damaged property on the campus, prompting the administration to call in police. Aishe Ghosh, president of Jawaharlal Nehru University Students Union (JNUSU), was among those attacked, and has sustained head injuries.

While JNUSU claimed members of Akhil Bharatiya Vidyarthi Parishad (ABVP) were behind the attack, ABVP denied the allegations.

JNU violence: Professor at Centre for the Study of Regional Development Sucharita Sen at AIIMS on Sunday. She suffered deep cuts on her forehead. (ANI)

JNU Students' Union president Aishe Ghosh was among those attacked.

The JNU administration said "masked miscreants armed with sticks were roaming around, damaging property and attacking people".

Police entered the JNU campus on the request of the university administration to restore law and order in the campus. Lt Governor Anil Baijal also directed Delhi Police to take all possible steps to maintain law and order.

Swaraj Abhiyan chief Yogendra Yadav was also manhandled outside the campus. He alleged that there was no one to stop the “hooliganism” and he was not allowed to speak to the media.

Police finally arrived outside the campus around 7.30 pm despite calls from JNU as well as frantic students and teachers, and said it held flag marches inside at regular intervals. By Sunday night, over 700 policemen were present on the campus. (Express photo: Abhinav Saha)

Hundreds of students from different universities in the national capital also staged a protest outside the Delhi Police headquarters at ITO after violence broke out at JNU. (Express photo: Amit Mehra)

Solidarity protest were also held in Mumbai and Aligarh Muslim University. (Express photo: Nirmal Harindran)