At least 12 people have died, up to 50,000 have fled their homes and about 1.5 million are marooned following heavy rains that flooded several districts in northern Bangladesh, government officials said on Friday, according to Reuters. The deaths were mostly caused by the collapse of dozens of mud houses, an official told reporters in the town of Bogra, one of the areas affected by the flood, about 200 km (125 miles) north of Dhaka. Thousands of families were camped out in schools and river embankments, displaced by the second wave of flooding in the northern region this year. Hundreds of people die each year in monsoon floods that strike large parts of low-lying Bangladesh and the eastern states of India.