Source: BBC News
http://news.bbc.co.uk/2/hi/africa/4549175.stm
On May 15, 2005 BBC News reported, "Police in northern Nigeria have arrested 43 people after two days of clashes between Muslim sects which left two people dead and many injured. Shia and Sunni Muslims in the town of Sokoto have been in dispute since the start of the year over access to the two central mosques. The predominantly Muslim town of Sokoto is home to the Sultan of Sokoto. He is the spiritual leader of all Nigerian Muslims, who account for roughly half the country's population. The fighting began on Friday as worshippers gathered at the mosque for midday prayers. According to eyewitnesses, a group of youths carrying sticks, stones and swords tried to prevent the Shias from entering. The situation quickly degenerated into violence and two people were killed. A Shia primary school was also set ablaze."