Three days after the incident a case has been filed against 68 people in connection with the death of four people in a clash between supporters of two rival candidates in the upcoming Union Parishad election at Jagodal village in Magura Sadar upazila.
Anwar Hossain, brother of victim Sabur Molla lodged the complaint with Magura Police on Monday.
The clash occurred on Friday.
The killed were identified as member candidate Sabur Molla, 50, his brother Kabir Molla, 55, his cousin Abdur Rahman, 50, and Imran Ali, 32.
The clash erupted between the two groups for establishing supremacy, said Additional superintendent of police Quamrul.