Complex sentence: A separate Thana was established at Jagannathpur on 1 October 1920 by a gazette notification by Anamul Haque of Parargaon; the thana was upgraded first as an Upazilla in March 1983, Sirajul Islam (2003).
Split into simpler sentences: A separate Thana was established at Jagannathpur in 1 October 1920 by a gazette notification by Anamul Hawk of Parrargow. This was upgraded first as an Upazilla in March 1983, Sirajul Islam (2003).