Police clashed with student protestors in Dhaka.
A demonstration began today as students at seven colleges recently affiliated with Dhaka University demanded examination schedules.
Students from poorer backgrounds in Bangladesh have been struggling to afford to stay at the colleges as they await to sit their exams which have been delayed.
They formed a human chain this morning, 20 July, which was then dispersed by police using tear gas and baton charges.
At least four students were injured.
Officials say 13 were arrested on the spot.