Students and teachers of different institutions staged a human-chain demonstration on the Dhaka-Mawa Highway on Thursday demanding maximum punishment of the driver of the truck that ran over and killed fifth grader Fatima Afrin, 10, and her brother Afsar Hossain, 8, both students of Cosmopolitan Laboratory School and College in Keraniganj's Hasnabad on their way home from the school on Monday. Photo: Abdullah Al Momin