Nigerians go to the polls in key presidential election
Africa's most populous nation, Nigeria, has been voting in presidential elections.
The current President Goodluck Jonathan is standing for a second term.
But he is facing a strong challenge from Muhammadu Buhari, a former military ruler.
Security is a key issue and there has been some sporadic violence at a number of polling stations.
Andrew Harding reports.
28 Mar 2015
- From the section Africa