First Security Islami Bank Ltd. inaugurated its 100th sub-branch at Mogoltuli, Chattogram on September 14, 2021 with a view to providing shariah based banking services to its clients. In the same day, the Bank inaugurated more 4 sub branches as Dakbangla Bazar Sub-branch, Jhenaidah; Rajashon Sub-branch, Savar, Dhaka; Shimultoli Sub-branch, Joidebpur, Gazipur and Gochara Chowmuhoni Sub-branch, Rangunia, Chattogram. Mr. Syed Waseque Md Ali, Managing Director of the Bank inaugurated those sub-branches through Video Conference. Among others, Mr. Abdul Aziz and Mr. Md. Mustafa Khair, Additional Managing Director(s), Mr. Md. Zahurul Haque and Mr. Md. Masudur Rahman Shah, Deputy Managing Director(s) along with other high officials were present in the occasion. A Doa Mahfil was organized in this regard.