KANO, Nigeria (AFP) - Nigerian opposition leader Muhammadu Buhari, who also led the country as a military dictator in the 1980s, was the target of the second bomb attack in the northern city of Kaduna on Wednesday, an official said.

Ahmed Maiyaki, spokesman for Kaduna's governor, told AFP that Buhari "was the target" of the bombing in the Kawo area of the city.

Buhari, who came runner-up to President Goodluch Jonathan in Nigeria's 2011 elections, is a leader of the All Progressives Congress and may emerge as the party's presidential candidate in polls set for next year.