Nigeria's President, Goodluck Jonathan has ordered an investigation into allegations that 20 billion dollars in public money has gone missing.
The allegations were made by Central Bank Governor, Lamido Sanusi, who discovered the money had disappeared from the accounts of the state run oil company, known as the NNPC, last week.
Nigeria's Finance Minister, Ngozi Okonjo-Iweala admits that at least 10 billion dollars remains unaccounted for.