The order to further remand the students, from today until June 14, was issued by Magistrate Sharifah Muhaymin Abdul Khalib during a proceeding at the Sepang district police headquarters.
However, four Universiti Tenaga Nasional (Uniten) students who were detained in connection with the case were released on police bail, lawyer Sukhdave Singh Kashmir Singh, who represented three of the Uniten students, told reporters when met at the police headquarters.
Several family members were seen in the compound waiting to meet the students.
The students, aged 20 and 21, were detained on June 2 to facilitate investigation on the death of UPNM student, navy cadet Zulfarhan Osman Zulkarnain, 21.
Zulfarhan Osman, a third year electrical engineering student, died of severe burn injuries to his body which was inflicted by a hot steam iron. There were also multiple bruise marks on his body, believed to be from being severely beaten by his attackers.