Officials in Nigeria say gunmen have killed 15 people in an early-morning attack on a Catholic church, including two priests.
The attack took place in Ayar-Mbalom, a community in Benue state.
Terver Akase, a media aide to the Benue state governor, says the attackers also burned down 50 houses.
President Muhammadu Buhari in a statement calls the violation of a place of worship "vile, evil and satanic" and an attempt to stoke religious conflict.
Benue state in central Nigeria has seen a series of attacks in recent weeks, many linked to a long-running dispute between farmers and herdsmen.
A few days ago 10 people were killed by alleged herdsmen in the state.