Witnesses said the two feuding bodies were engaged in chase and counter-chases when a procession of the BCL, the student wing of Awami League (AL), reached in front of DU central mosque at around 8:30am.

The BCL brought a group of outsiders and urchins in its procession, who took part in the fight, according to witnesses.

The two student organisations were locked in fights at least three times on the campus since a strike had been called at the university on November 19.

Chhatra Sangram Parishad (CSP), a combine of 14-party backed student organisations led by the BCL, called the indefinite strike protesting the pro-BNP student body JCD's attack on its leaders and activists.

BCL men led by DU unit President Sohel Rana Tipu and General Secretary Sazzad Saqib Badsha pelted JCD men with brickbats, while the JCD led by Saiful Islam Firoz retaliated in the same way.

Both the groups exploded cocktails and fired gunshots. No casualty was reported.

Police rushed to the spot and brought the situation under control. They also recovered three unexploded cocktails from the spot and took them to Shahbagh Police Station.

Saiful Islam Firoz, DU unit JCD general secretary, alleged that the BCL is creating anarchy and making the campus unstable with outside criminals and urchins, who exploded bombs and fired gunshots.

Firoz said JCD along with students will resist the BCL criminals so that it cannot create further anarchy.

Sohel Rana Tipu, however, denied the allegation of bringing outsiders in its procession. He said the JCD hooligans attacked their peaceful procession without any provocation and hurled cocktails and fired gunshots at them.