Members of Detective Branch of Police in separate drives held four accused including mastermind in four Awami League leaders and activists murder case from different parts in the capital.The arrestees are Juwel, Nahid, Iqbal and Raju. Further details about them could not be known immediately.Police also recovered two pistols and four round bullets from their possession.ASM Hafizur Rahman, Senior Assistant Commissioner of Media and Public Relations department of Dhaka Metropolitan Police, confirmed the matter to reporters.On 13 August, 2015, four Awami League leaders and activists came under attack at Badda near Adarsha Nagar water pump in the capital. Later they died during their ongoing treatment.