During the British rule, there was a Bamni Thana in this area (in Rampur Union). There are also villages named Bamni and Musapur in Sandwip. It is known that people from these two areas emigrated from Sandwip due to river breakage.
During the British era, a Bamni Thana existed in this region (within Rampur Union). Furthermore, there are villages called Bamni and Musapur in Sandwip. It is understood that individuals from these two regions left Sandwip as a result of river changes.