Bangladesh Inland Water Transport Authority (BIWTA) yesterday knocked down 57 illegal structures in Keraniganj's Madyachar and Basila as part of the ongoing drive against illegal establishments along the Buriganga and the Turag.

The Bangladesh Inland Water Transport Authority (BIWTA) yesterday knocked down 252 illegal structures, including 10 multi-storey buildings, at the capital's Kamrangirchar.