More than 20 people have been injured in a second day of clashes between students and police at Bangladesh's largest university.

During Tuesday's clashes at Dhaka University, police fired tear gas and rubber bullets at hundreds of students protesting the presence of army troops on their campus.

Students threw stones and burned vehicles, including an army van, during Tuesday's protest.

Similar clashes Monday injured about 100 people.

University authorities have canceled classes and postponed exams as students called for an indefinite strike to protest the army's presence.  Many teachers have joined students in demanding the pullout of army troops.

Military forces have been on the Dhaka University campus since January, when the military-backed interim government imposed a state of emergency and banned all political activities and mass protests.

The dispute between students and soldiers broke out Monday during an on campus soccer game.

Some information for this report was provided by AFP, AP and Reuters.