An official says that 29 bodies have been found after new struggles between farmers and shepherds.
The official said the corpses were rescued with gunshot wounds and wounded after Tuesday's attack in the village of Maro, Kaduna State. A policeman was killed as he tried to calm the violence.
The officer, who was in the vicinity of a government team in the area, spoke with The Associated Press on condition of anonymity because he was not authorized to speak to the press.
The Kaduna governor's spokesman confirmed the "sad news of renewed attacks in the Kajuru and Kachia local government areas," but made no casualties.
In the south of the state of Kaduna, there was a series of disputes over the ever-dwindling water and land.
The government said last week that 130 people were killed in Kajuru.