The region's Matamuhuri and Bakhkhali rivers overflowed after five days of heavy rain and inundated about 200 villages, chief government administrator Zainul Bari said. The displaced have taken shelter in school buildings in the flood-hit district of Cox's Bazar, he said.

He said floodwaters damaged shrimp farms and paddy crops in the affected areas. Bari said government relief workers are handing dried food and clean drinking water to the displaced.