Sixty-eight people have been sued on charge of killing two siblings.
The victims were Edrish Mollah, 48, and his brother Lablu Mollah, 42, of Sotrokanda village in Boalmari upazila.
The two died of injuries at Faridpur Medical College Hospital on Thursday night, around two hours after they were hacked by unidentified criminals in Barasori Shoshanghat area in Alfadanga upazila.
Abul Kahsim Mollah, elder brother of the deceased, yesterday filed the murder case, accusing 41 known and 27 unknown people, said Shahab Ali, sub-inspector of Alfadanga Police Station.
On Friday midnight, police arrested five out of 68 accused in connection with the double murder. Later, the arrestees were produced before a court that sent them to jail, said the SI.
Locals suspected that Edrish and Lablu were killed over a longstanding political rivalry between Md Israfil Mollah, chairman of Shakhor Union Parishad, and Abul Kalam Azad, member of Faridpur Zilla Parishad. Both Israfil and Kalam are vice presidents of Boalmari upazila Awami League.
Edrish was the vice president of Shakhor union AL and Lablu was the vice president of Shakhor union Jubo League. The two siblings had businesses of garment products and furniture at Alfadanga bazar.
The deceased were supporters of Israfil.