A text message, threatening him, came from 01756817269 around 4pm on Saturday, he told the Dhaka Tribune.
He said: "I got the SMS shortly after transferring three criminals to different prisons. Killer Abbas was transferred to Jessore, Pichchi Helal to Rajshahi and Rashu was shifted to Comilla."
The sender rued Killer Abbas' transfer to Jessore jail, he added.
The SMS reads: “Mr IG, Have you gone mad? Ramzan Eid is upcoming, at this moment you sent my brother to Jessore Jail.!! without any reason. This time I will not spare you. From human rights commission to bureau of conspiracy, I will make you naked and exposed everywhere.” [sic]
The sender said he would start “war against you.”
Brig Gen Iftekhar said prison officials had gone to the Chawkbazar police station to file a complaint.