Pakistan bus fire kills at least 18

{O/C} In Pakistan, at least 18 flood survivors were killed when their ill-fated bus went up in flames.

{RVO}

The bus was making its way to the flood-struck area of Khairpur Nathan Shah in Sindh province, where flood waters finally tapered off.

Rescuers frantically evacuated passengers, mostly children.

Some were trapped inside the blaze-blanketed bus and couldn't flee.

Authorities said the air conditioning unit of the bus short-circuited.

Fatal bus blazes are predominant in Pakistan due to crumbling road infrastructure, disregard for traffic laws and poorly-maintained vehicles.