BRTA Deputy Director Sitangshu Shekhar Biswas disagrees with the theory given by police that share market investments were behind the attack on his family at their flat in Mohammadpur on March 30, his family said.
Sitangshu’s younger sister Kanika Biswas said: “Dada [Sitangshu] said he has Tk8 lakh invested in the share market. He said this money cannot be the reason for the attack.”
But Sitangshu could not offer an alternative motive for the attack.
The Detective Branch (DB) of police on Saturday opened an investigation into the murder of Sitangshu’s wife, college teacher Krishna Kaberi Biswas, who was killed in the attack.
DB officials said the motive for the attack would be clear after the arrest of only accused KM Jahirul Islam Palash, manager of Gulshan branch of Haji Ahmad Brothers Securities.
DB Additional Deputy Commissioner (media) SM Jahangir Alam Sarker said detectives were working hard to make an arrest, adding that Jahirul’s whereabouts were being traced.
On the night of March 30, the perpetrator visited Sitangshu’s flat to offer him belated birthday wishes. He then drugged Sitangshu and struck him on the head with a hammer.
As Kaberi, 36, attempted to come to her husband’s aid, the killer hacked her with a kitchen sickle and then set her on fire. She died the following day. Their two daughters were also injured in the attack.
Sitangshu, undergoing treatment at Metropolitan Medical Centre in the capital, was told about the death of his wife Kaberi on Friday night. She was cremated on Saturday in Sitangshu’s home village of Baliakandi, Rajbari.