Earlier, police had also recovered two burqas worn by assailants Shamim and Jobayer on the day of the murder
The Police Bureau of Investigation (PBI) on Wednesday retrieved a glass used to pour kerosene on Nusrat Jahan Rafi, before she was set ablaze, from Sonagazi Islamia Senior Fazil Madrasa in Feni.
A PBI team recovered the evidence after conducting a search based on information provided by some of the suspects currently in remand.
Confirming the matter to Dhaka Tribune, PBI Inspector Md Shah Alam said they found the glass in the principal's office on the second floor of the institution's administrative building.
Police conducted the drive in the presence of three of the suspects—Shahadat Hossain Shamim, Javed Hossain and Jobayer Ahmed. After completing the search, police took the three back to the PBI office in Feni.
Earlier, police had also recovered two burqas worn by assailants Shamim and Jobayer on the day of the murder.
Alim examinee Nusrat suffered 80% burns after she was set on fire on the roof of the institution in Sonagazi on April 6 by four burqa-clad assailants, who were followers of the now-suspended madrasa principal Sirajuddaula.
The suspects attacked the 18-year-old girl for refusing to withdraw a case her family had filed against Sirajuddaula for sexually harassing and assaulting her.
Her family filed another case against eight people, including Sirajuddaula, on April 8 for the attack on Nusrat—which was later accepted as a murder case when she died of her injuries on April 10.
So far, a total of 21 people have been arrested for their alleged involvement in Nusrat Jahan Rafi’s murder, and 18 of the arrestees have been placed on different terms of remand.
Sirajuddaula, who was arrested after the first case was filed, is currently behind bars, with six other accused.