Rapid Action Battalion (RAB) on March 30 arrested an online financier of the banned militant outfit Ansar-al-Islam from Rajuk Uttara Housing area of Dhaka city in Dhaka District of Dhaka Division, reports Dhaka Tribune. He is identified as Muhib Mushfiq Khan (19). He was the online financier of the organization. A huge number of extremist books and electronic devices were recovered from his possession.