Three people were killed as two groups of villagers clashed over a disputed land at Mithapur village in Badalgachhi upazila on Friday night.
The deceased were identified as Shahidul Islam, Abdul Wadul and Amjad Hossain, residents of the village.
Assistant Superintendent of Police Mahfuz Afzal said, there had been a longstanding dispute between Shahidul Islam and Hasan Ali over the ownership of a piece a land.
On Friday night, the supporters of Hasan made an attack on Shahidul and his associates while they were at a meeting over the issue.
At one stage, they stabbed Shahidul, Wadul and Amjad indiscriminately, leaving them seriously injured.
Shahidul died while he along with the other two was being rushed to Naogaon Sadar Hospital on Friday night.
Wadul and Amjad were later taken to Rajshahi Medical College Hospital following deterioration of their condition.
They, however, died at the hospital yesterday morning.
Azizul Haque, officer in-charge of Badalgachhi police station, confirmed the deaths of three in the clash.
Later, angry local people vandalised houses of Hasan Ali and Saiful Islam yesterday morning.
On information, police rushed to the spot and brought the situation under control.