, Sept. 15 -- 9 custody in Sylhet on Sunday morning, a day after his arrest.

The dead man was identified as Tanvir Chowdhury, 26, from Sardaganj in Gazipur.

He was the main accused in the killing of his wife in Naogaon on September 11, when he allegedly stabbed her to death in broad daylight.

According to the source of RAB, Tanvir was arrested on Saturday evening in Jaintapur upazila of Sylhet during a joint drive by RAB-9 and RAB-5 and brought to the RAB-9 headquarters in Sylhet around 9pm that night.

RAB-9 Captain and Wing Commander Tajminur Rahman said, "Tanvir was kept in a cell and given food on Sunday morning. Around 8:30am, he tied a blanket with the ventilator grill and hanged himself. The whole incident was recorded on CCTV"....