A case has been filed in connection with the death of a woman who was the first wife of a councillor of Narayanganj City Corporation on Monday.Jharna Haidar, mother of the deceased Sadia Islam, filed the case with Sadar Model Police Station on Monday, said Chai Lau Marma, additional superintendent of Narayanganj Police.Earlier on Sunday, Sadia, 30, first wife of councillor Shahajalal Badal, apparently committed suicide by jumping off the roof of a building at Chashara Balur Math in Narayanganj.Meanwhile, Detective Branch of police on Sunday detained Badal, who is the nephew of the notorious Nur Hossain, himself a former councillor but now a death row convict. Badal was released after interrogation.“Police are investigating the incident and legal steps will be taken if any complaint is filed,” said ASP Chai Lau.The autopsy of Sadia was conducted at Narayanganj General hospital on Monday. Dr Sheikh Farhad, resident medical officer of the hospital and Mafiz Uddin, conducted her autopsy.The reason behind her death will be known after getting a postmortem report.On February 8, 2022, Sadia in a press briefing at her residence alleged that Councillor Badal had 'abandoned' her and married another woman without taking her permission, as prescribed in Islamic law. According to the allegation of Sadia, she married Badal in 2007 and the couple were blessed with a child through IVF (In vitro fertilization). Councillor Badal denies the allegations against him.