Eight people, including two women, received bullet injuries as a rival group attacked and opened fire on them in Mondal Para area of Pabna Sadar upazila on Wednesday evening.
The injured were identified as Matya Ujjal, 44, Mahbub, 30, Hamidul, 28, Monowara Khatun, 36, Nasim, 25, Kanchan, 31, Hanif, 32 and Parvin AKhter, 40, of the area, according to a news agency report.
Witnesses said there had been a longstanding dispute between local Jubo-League leaders Habban and Moazzem.
Centring the issue, supporters of Habban opened fire on Biddut, a supporter of Moazzem, on Monday, inflicting injury in his leg.
After receiving treatment and returning from Pabna General Hospital, Biddut along with others attacked the supporters of Habban and opened fire on them in the evening, which left eight people injured.
Abdullah Al Hasan, officer-in-charge of the Sadar Police Station said, on information, law enforcers rushed to the spot and brought the situation under control.
The injured were admitted to the hospital.