A clash erupted between two factions of Jatiya Party (JaPa) led by HM Ershad Friday at Biswnath upazila of the district, leaving 15 people injured.
Witnesses said around 3:30pm, JaPa leader Arosh Ali and his supporters brought out a procession in the upazila's sadar area applauding the newly formed district JaPa convening committee led by Abdullah Siddique-Osman Ali.
When the procession marched to Basia bridge area, an opposing group led by Sitab Ali, who is backed by local JaPa MP Iahia Choudhury Ahia, threw bricks at the activists in the procession, erupting a clash between the two groups.
The injured included Sitab Ali, Suhel Ahmed, Abdul Hannan, Monjur Ahmed, Shamim, Suhag Ahmed, Jalal, businessmen Monfor Ali, Azad Ali, Naim Miah, Jewel Ahmed and Abul Kalam.
Sub Inspector Masud Alam said police went to the spot after receiving information and brought the situation under control.