Police have arrested three individuals in connection with the killing of Jahidul Islam Parvez, a third-year student of Primeasia University, in the capital's Banani area on Saturday.

The arrestees are Al Kamal Sheikh, Alvi Hasan Zunayed, and Al Amin Dani. They are all 19 years old.

A team of police arrested them from the Mohakhali Wireless Gate area early today, said AKM Moin Uddin, inspector (operations) of Banani Police Station.

"They are not named in the FIR, but primary investigation suggests they were involved in the murder," the police official told The Daily Star this morning. CCTV footage also confirmed their presence at the crime scene, he added.

Eight named individuals, including two leaders of the Banani Thana unit of Student Against Discrimination (SAD), along with at least 25 unnamed persons, were sued early yesterday in connection with the killing.

Jahidul, 24, a student of the textile engineering department, was stabbed to death around 4:40pm, hours after a brief altercation near the university premises.

The case was filed by the victim's cousin, Humayun Kabir. He said he identified the accused based on CCTV footage.

Among the named individuals are Sobhan Niyaz Tushar, joint convener of the Banani Thana SAD unit, and Hriday Miazi, joint member secretary of the same unit, according to the case statement.

The six other accused are Meheraj Islam, Abu Jahr Giffari alias Piash, Mahathir Hasan, Rifat, Ali, and Fahim.

According to the case statement, Jahidul and some friends were having snacks around 3:00pm near the university after an exam. They were laughing and joking when two female students of another private university and some others were seen nearby.

Three individuals approached Jahidul and questioned why they were laughing, alleging the group was mocking the girls. A quarrel followed but was resolved with the intervention of university authorities.

Later, around 4:40pm, Jahidul was stabbed in the chest.