Gunmen kill 27 in central Nigeria attack: police
Police in Benue state were still investigating the attack, but Benue is part of the Middle Belt region where communal clashes are common between nomadic herders and local farmers over land, grazing and water.
She said investigations were ongoing into motives for the attack.
Last week, at least 88 people were killed when gunmen on motorcycles attacked seven villages in Danko-Wasagu district in northwest Kebbi state.
Gangs in the northwest this year have stepped up attacks on schools and colleges, kidnapping hundreds of students to demand ransoms from authorities and parents.
Attacks in northwest and central Nigeria are just part of the challenge facing President Muhammadu Buhari's security forces who have been locked in a war with jihadists in the country's northeast for more than a decade.