Three students were shot dead by the ruling party activists and 50 others injured in a clash between protesters and Awami League activists in Pabna district town on Sunday, said police.
The deceased were identified as Zahid Islam, 19, Mahbubul Hossain, 16 and Fahim, 17.
Masud Alam, additional superintendent of Pabna police, said a group of students of Pabna Government Edward College brought out a procession from thier campus in the afternoon and were staging demonstrations peacefully at Abdul Hamid Road JB intersection as part of their scheduled non-cooperation movement.
At one stage, some Awami League men including organising secretary of Sadar Upazila unit AL Abu Syed and joint convener of District unit Jubo League Shibli Sadik attacked them, triggering a chase and counter -chase.
Later, they fired bullets targeting the protesters, leaving students dead and 50 others injured.
Police chased the attackers to bring the situation under control.
The injured were taken to Pabna General Hospital.
Then the students also vandalised the office of Jubo League and set fire on the vehicle of a local chairman.
They also brought out a procession with the bodies killed during the protests.