New Delhi, Jan 8 (IANS): The Centre on Wednesday said that the Delhi Police has obtained "vital leads" in the Jawaharlal Nehru University (JNU) violence and efforts are going on to identify the masked people engaged in the act.

Officials, requesting anonymity, said that "no fresh cases were registered", apart from three already done regarding the JNU incident which occurred on Sunday where a masked mob carrying iron and wooden rods, left 30 persons, including students and teachers, injured.

"No arrests have been made so far. However, police has vital leads and lot of positive efforts going on for the identification of the masked people engaged in violence in JNU."

The government source shared the input a day after a fringe group by the name of Hindu Raksha Dal claimed responsibility for the violence.

JNU witnessed widespread violence on Sunday evening in which two office-bearers of the Jawaharlal Nehru University Students Union (JNUSU), including President Aishe Ghosh, received injuries.

While the left unions have blamed Akhil Bharatiya Vidyarthi Parishad (ABVP) so far, the RSS-linked students union has blamed the Left.

The JNU has limped back to normalcy after the violence but a sense of fear still prevails in the campus.