Nigeria’s finance minister Ngozi Okonjo-Iweala
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Nigeria's finance minister calls for oil revenue audit

12 March 2014 Last updated at 01:32 GMT

Nigeria's finance minister has called for an audit of the national oil company, after it was accused of failing to account for billions of dollars in oil revenues.

Ngozi Okonjo-Iweala told the BBC's Will Ross that the Nigerian National Petroleum Company (NNPC) had to account for the missing money, and that the government was being transparent about the issue.