RAB-4 disclosed it at a press conference at its headquarters in the capital yesterday after they arrested three people in connection with the murder.
Victim Ali Hossain Malik, manager of a seven-storey building under construction, was found dead on the second floor of his site office in the capital’s Old DOHS on October 11.
The arrestees are Masud Malik, driver of Ali, Sayed Fakir alias Saiful, an employee of the land’s owner, and Sujon, Saiful’s cousin.
Saiful and Sujon were arrested on Monday from Gouronadi in Barisal, while Masud from ECB intersection inside Dhaka cantonment on Monday night based on tip-offs, said RAB-4 Commanding Officer (CO) Khandker Lutful Kabir.
The law enforcers recovered Tk 1.10 lakh from Saiful and Sujon.
Masud had been planning to loot money from Ali, who lived with his family in the capital’s Mirpur-10, for several days.
His first attempt was not successful, as Ali went home at night after withdrawing money from a bank On October 9.
Later, on October 11, Masud in collaboration with other arrestees tied Ali, who was staying at the office that night, and stabbed him to death.
Then they took the keys of the room, where the money was kept, and took off with Tk 1.40 lakh.
RAB was verifying the information they provided and would hand over them to Bhashantek police station, said Kabir.
A case was filed with the police station in this connection on October 11.