Security forces in Nigeria are again on high alert following an attack on a village near the city of Jos, which killed at least 13 people.
Hundreds of people have been killed in sectarian violence in the area in the past few months.
A dusk-to-dawn curfew has been enforced by the Nigerian military around the city of Jos since January, but still people are being brutally murdered.
In the latest violence, witnesses say Muslim herders disguised as soldiers attacked a predominantly Christian village killing more than a dozen people, mostly women and children.
The attackers struck at night and reportedly used machetes to butcher their victims before burning homes.
Survivors say some of their relatives are still missing.
The killings are believed to be related to a feud between the nomadic Muslim group Fulani and the Berom, who are Christian farmers.