Rapid Action Battalion has arrested FIR accused Saidul Islam Alias Shaku, 45, in connection with the much talked about Mitu murder case. A murder case was filed by Mitu's -- wife of former SP Babul Akter -- father earlier today. Rab Hathazari Camp Commander Major Mushfiq told The Daily Star, "Rab men arrested Shaku from Ranirhat Bazar area of Rangunia upazila at around 10:00am