Nigeria's President Muhammadu Buhari on Sunday called for calm after 86 people were killed in an attack by suspected nomadic herders against farming communities in the restive centre of the country.
The grim discovery in the Barikin Ladi area of Plateau state came after days of violence apparently sparked by an attack by ethnic Berom farmers on Fulani herders on Thursday.
State police commissioner Undie Adie said a search of Berom villages in the area following clashes on Saturday found "86 persons altogether were killed".
Adie told reporters six people were also injured and 50 houses were razed. Bodies of those who died have been released to their families, he added.
The deaths are the latest in a long-running battle for land and resources that is putting President Muhammadu Buhari under pressure as elections approach next year.
The violence fuelled by ethnic, religious and political allegiances has killed thousands over several decades.
Analysts believe it could become Nigeria's biggest security concern, eclipsing Boko Haram's Islamist insurgency that has left at least 20,000 dead since 2009.
Buhari's office said he "appeals for calm and assures that no efforts will be spared" to bring those responsible to justice and prevent further attacks.