Rapid Action Battalion arrested another classmate of slain schoolboy Md Rasheduzzaman Leon from Kewatkhali area in the town on Tuesday night.

The arrestee is Suhanur Rahman Suhan, 14, son of Suruj Ali of Digarkanda area in Sadar upazila.

Earlier, Sakibul Hasan, 15, a classmate of the victim, was held in this connection.

Leon, 15, was a Class IX student of Kewatkhali Railway High School.

One Nayeem, 18, an outsider, along with Sakibul and four other classmates of Leon attacked the victim at the school gate when he was going to attend class in the morning.

Leon died at Mymensingh Medical College Hospital.