A fatwa has been issued by Muslim clerics in Bangladesh against the killing of non-muslims, members of minority groups and secular campaigners after a recent surge of targeted killings and attacks.Since 2013 nearly 50 people, including members of religious minorities, foreigners and liberal activists, have been murdered by Islamist militants, according to Press TV. More than 11,000 people have been arrested over the past four days in a new crackdown in connection with the attacks. Islamic State (IS, formerly ISIS/ISIL) and a South Asian branch of Al-Qaeda have claimed responsibility for many of the murders, but the police and government have blamed the Islamist extremist groups Ansarullah Bangla Team (ABT) and Jamayetul Mujahideen Bangladesh (JMB), for most of the killings.Bangladeshi Prime Minister Sheikh Hasina pledged that “each and every killer” would be arrested. However, opposition group, the Bangladesh Nationalist Party (BNP) claims 2,100 of its activists were arrested in the crackdown and accused the government of using the crackdown as an opportunity to suppress political dissent. The Bangladeshi government have previously separately accused the BNP and the Israeli government of orchestrating the attacks to create political unrest and undermine its authority.