[7] Additional Deputy Inspector General Islam served as the commanding officer of Rapid Action Battalion-3 in 2014 when 18 of his men where withdrawn for embezzling from a suspect.
[9] In October 2016, Islam was appointed deputy inspector general of Special Branch from the Highway Police.
[11] In February 2023, Islam was appointed the rector of Police Staff College in Dhaka.
[12] He was elected vice president of the International Association of Police Academies.
[4] Islam's wife, Jesmin Ahmed Mallick, died after a fall from the rooftop of their residence in Bashundhara Residential Area on 8 May 2016.