The students who were managing the traffic at Jigatala intersection and Mirpur in the city came under attack on Saturday.
A group of 25-30 youths, said to be Bangladesh Chhatra League activists, swooped on the students with sticks in front of the BGB Jigatala gate around 2pm, leaving some of them injured.
They retreated when the students chased them with sticks and whatever they got around them.
However, the youths regrouped and attacked the protesting students again around 3:30pm, leaving a number of the students injured.
Later, chase and counter-chase took place between the two groups several times.
Finally, members of Border Guard Bangladesh came out of the Pilkhana headquarters and brought the situation under control.
The agitated students also vandalised a police box in Science Lab area during the melee.
In Mirpur-2, around 50 youths, believed to be BCL men, swooped on the protesting students with sticks at 12 noon.
The attackers chased the students towards Mirpur-10 upto Mirpur-2 Shopping Complex.