Rajshahi Metropolitan Police Commissioner Md Shamsuddin gave this information while speaking to reporters in his office on Wednesday.
The English professor was hacked to death a few yards from his home in the city’s Shalbagan area while waiting for a bus to the campus around 7:30am Saturday.
The two of the attackers shouted ‘Naara E Takbeer’ and attacked the professor, while another sat on a motorbike, said the commissioner.
“We will soon confirm who they were.”
Multiple police teams are currently investigating the murder.
Police have arrested a local leader of the Jamaat-e-Islami’s student wing Islami Chhatra Shibir, besides the imam of the mosque at Siddiquee’s home village, and a madrasa teacher.
Detective police have been investigating the case filed at the Boalia Police Station by the victim’s son Riasat Imtiaz Sourav.