The presiding officer AGS Kashem — who also serves as joint convener of Ramganj Upazila BNP — was severely beaten during the altercation.
He has been sent to Dhaka for advanced medical treatment, while the other injured are being treated at the Ramganj Upazila Health Complex.
The clash erupted around 6 pm at a madrasa adjacent to the Beribazar Central Mosque, shortly after the results of the union-level committee election were announced.
According to locals, tensions between two BNP factions escalated over the pre-declared results, leading to the violence.
Md Abdul Bari, officer-in-charge (OC) Ramganj Police Station, said they have received information about the attack, reports UNB.
Legal action will be taken once a complaint is received.
Additional police personnel have been deployed in the area to maintain order, added the OC.