Police Bureau of Investigation (PBI) would not make mistakes in the probe into the murder of Mitu, wife of former Chittagong superintendent of police (SP) Babul Akter, Home Minister Asaduzzaman Khan has said.

“Everything PBI has done so far has been pragmatic, and you will get answers to all the questions raised by Babul Akter after the investigation is completed,” he told reporters after an event in the capital;’s Shahbagh on Saturday.

The minister added that the PBI was given the responsibility to investigate the matter and they are doing their job

Responding to a question about whether Babul Akter’s complaint against PBI chief Banaj Kumar Majumdar will have any impact on the investigation, Home Minister Asaduzzaman Khan said: “Babul is a very clever person. An investigation will reveal everything.”

On Thursday, Babul Akter lodged a complaint before a court against six officials of PBI, including its chief Banaj Kumar Majumder for torturing and attempting to kill him in police custody.

Babul, who is now in jail in a case over the killing of his wife Mahmuda Khanam Mitu, lodged the complaint in the court of Chittagong Metropolitan Sessions Judge Jebinnessa.

On June 5, 2016, unidentified assailants gunned down Babul's wife Mitu at the port city's GEC intersection while she was going to drop her son Mahir Akhter, 7, off at Chittagong Cantonment Public School and College.

Soon after the crime, Babul filed a murder case at Panchlaish police station against three unidentified men.

The case was transferred to PBI in 2019 after Mitu's father, a retired police officer, filed a complaint against the CMP's mishandling of the case.

On May 12, 2021, PBI submitted its final report and arrested Babul Akter in another case filed by Mitu’s father and since then he has been in prison.

Babul Akhter also filed a “naraji petition” against the PBI report on October 14, 2021.

On November 3 last year, a Chittagong court rejected the final report of PBI in the murder case and ordered it to conduct further investigation.

PBI in an investigation found Babul’s involvement in his wife's murder.