At least 15 people were injured in a clash between two groups of villagers at Charbalaki village in Gajaria upazila on Saturday night.
Police and local people said there was a longstanding conflict between Mahfuz Mia and Barek Mia over establishing supremacy in the village.
They said Sumon, son of Barek Mia, went to buy some commodities from the grocery shop of Manik, son of Mahfuz Mia on credit.
But an altercation ensued between them when Manik refused to sell the commodities on credit.
Later, both the groups equipped with sharp weapons attacked each other, leaving 15 people including Manik, Sumon, Alauddin, Yakub, Kulsum, Rabeya, Mili, Rahim, Sabura and Mahfuz injured from both sides.
Critically injured Manik and his mother Sabura were sent to Gajaria upazila hospital while others to Sonargaon upazila hospital and a clinic in Dhaka.
A case was filed in this connection.