Chuknagar massacre (Bengali: চুকনগর গণহত্যা) was a massacre committed by the Pakistan Army during the Bangladesh Liberation War in 1971. The massacre took place on 20 May 1971 at Dumuria in Khulna and it was one of the largest massacres during the war. The exact number of persons killed in the massacre is not known. Academic Sarmila Bose, in her controversial book. dismisses claims that 10,000 were killed as "unhelpful", and argues that the reported number of attackers could have shot no more than several hundred people before running out of ammunition. The majority of people killed in the massacre were men, although an unknown number of women and children were murdered as well.