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.
Under British governance, a Bamni Thana was present in the area (within Rampur Union). Additionally, there are villages called Bamni and Musapur in Sandwip. It is well-known that individuals from these two regions emigrated from Sandwip as a result of river disruption.