The Sanctuary was established in 1986 through Gazette Notification XII/For-I/84/174. Covering nearly 7764 hectares, the predominant vegetation was originally garjan forest, but illegal logging and encroachment for cultivation resulted in a fragmented and degraded habitat. By 2003, secondary scrub covered approximately 44% of the Sanctuary, but various replanting projects have been undertaken with donor support.[2] This was the first wildlife sanctuary in Bangladesh. There are 15 villages in and around the Sanctuary.[3] The Sanctuary is home to several endangered timber species.[4]
The park is under the jurisdiction of Bangladesh Forest Department of the Ministry of Environment and Forest (MoEF), and is managed by them in cooperation with local communities.[7] The community patrols are led by women in green saris. They are from the local community and are funded by U.S. Agency for International Development and Germany's development agency GTZ. They receive stipends of $50 for their service.[8]