A former Nigeria oil minister and three election officials have been charged with money-laundering. Ex-minister Diezani Alison-Madueke was accused of bribing the officials before the 2015 presidential election that saw President Muhammadu Buhari emerging as winner.
The bribes amounted to almost N265m ( £694,493; $866,865), according to the Premium Times newspaper.
The three officials appeared at the Federal High Court in Lagos on 5 April. One pleased guilty and the other two not guilty.
Madueke was not in court and a charge sheet described her as being "still at large."
Madueke served under President Goodluck Jonathan, who lost to Buhari in 2015. She was arrested in London in 2015 on suspicion of bribery and money laundering, charges she has always denied.