A tragic accident killed at least 18 people and 52 severely injured in Bangladesh.

The bus, which was traverling from dhamra to dhaka, flipped off motoway in dense fog about 20km (12 miles) outside the captial. 


police said the driver lost control of the wheel  and the bus launched into a road side pond.
correspondents say that unusually thick fog has disrupted transport links across bangladesh
for the past week