A recent "peace council" meeting on the Niger Delta has proven ineffective in curtailing rising violence in the oil-rich Niger Delta where militants clashed with government forces in recent days and oil companies were cautioned to evacuate their workers.

Nigeria has regained -- albeit barely -- its top spot among African oil producers, despite continuing violence in the oil-rich Niger Delta.

KHARTOUM, Sudan, May 24 (UPI) -- Dozens of armed men in Darfur, Sudan, ambushed a Nigerian battalion that was on a United Nations-African Union peacekeeping mission, officials said.

ABUJA, Nigeria, March 7 (UPI) -- The People's Democratic Party candidate for president of Nigeria, Umar Musa Yar Adua, is seeking medical treatment.