The authorities however formed a six-member probe committee headed by Prof Sadekul Islam, dean of social science faculty, asking it to submit its report by October 10.

"The RU authorities are not eager to take any action as both the feuding groups are adherents of the ruling BNP. We are waiting to see if they reach a consensus," said a senior teacher, seeking not to be named.

When contacted, RU Vice Chancellor Prof Altaf Hossain denied the allegation and said, " We have formed a probe committee and we will take action after we get its report."

The JCD faction that brandished arms, blasted crackers and attacked Sher-e-Bangla Hall on Thursday filed a case under the explosives act with Motihar Police Station last night.

Abdul Latif Hall JCD unit Vice-president Akramul Haque Aikra filed the case accusing 30 people, including four Sher-e-Bangla Hall unit JCD leaders. The four are Adil Shariar Gorki, Asaik, Manik and Golam Kabir.

Earlier, police arrested injured Gorki as he moved out of the hall for treatment in hospital.

Supporters of Gorki immediately met the vice chancellor, threatening to cripple university activities if their injured leader was not released.

Tension is prevailing on the campus and many resident students of Sher-e-Bangla Hall left the campus, fearing fresh clashes.

A large number of police and armed police personnel were deployed in front of the halls of male students.

Meanwhile, Progressive Teachers Association, Bangladesh Chhatra League and Progressive Students Association in separate statements yesterday condemned the JCD factions' gunfight.

They demanded that the RU authorities must ensure security of the teachers, students and others on the campus.

Journalists of Rajshahi will hold a rally and bring out a procession on the campus today, protesting JCD cadres's attack on photojournalist Nazrul Islam Zulu of the daily Jugantor.