The Bangla College killing field is located in the Mirpur area of Dhaka, Bangladesh. In 1971, during the Bangladesh Liberation War, the Pakistani army killed 3 million Bangladeshis with the help of some local collaborators. It has been claimed to be the largest genocide after World War II. Bangladesh officially became independent on 16 December 1971, but the neighborhood of Mirpur was liberated from Pakistan Army and local Bihari people on 31 January 1972, 45 days after the declaration of independence was signed. Mirpur was largely inhabited by Biharis who were against the secession movement, so genocide took place on a large scale. Mirpur was the last battlefield of the war. Bangla College is one of the largest killing fields in Bangladesh.