Pakistan inherited blasphemy laws enacted by British colonial authorities and made them more severe between 1980 and 1986, when a number of clauses were added by the military government of General Zia-ul Haq, in order to "Islamicise" the laws and deny the Muslim character of the Ahmadi minority. Before 1986, only 14 cases of blasphemy were reported. Parliament through the Second Amendment to the Constitution on 7 September 1974, under Prime Minister Zulfiqar Ali Bhutto, declared Ahmadi Muslims as non-Muslims. In 1986 it was supplemented by a new blasphemy provision also applied to Ahmadi Muslims (See Persecution of Ahmadis). Between 1987 and 2017 at least 1,500 people were charged with blasphemy and at least 75 people involved in accusations of blasphemy were killed in Pakistan according to the Center for Social Justice.