At least twenty people have been reported killed in a religious riot in Jos on Monday.
According to officials of the National Emergency Management Agency, the fighting began after Muslims started praying in a predominantly Christian neighborhood in the city. Officials with a local Muslim group said the unidentified attackers used knives, machetes and bows and arrows.
About 50 vehicles and 100 motorcycles were also reportedly set ablaze during the fighting.
Army and police have moved into the affected neighborhood.
In January 2011, there were almost daily clashes between Christian and Muslim mobs in villages around Jos since a series of bombs had been detonated during Christmas Eve celebrations a month earlier, killing scores of people.
A witness said Christians involved in the clashes spoke of preventing Muslims from marking their holiday in revenge for a string of bombs that exploded in Jos on Christmas Eve last year.