The Nigerian government has filed a billion-dollar claim in a British court against oil giants Royal Dutch Shell and Eni over alleged fraud and corruption that diverted millions of dollars from the African nation.
The $1.1bn (£868.5m) claim lodged in the UK High Court alleges that money used in a 2011 deal for one of Africa's most promising oil blocks was paid to a company called Malabu, controlled by Nigeria's former oil minister Dan Etete.
The funds were allegedly used for "bribes and kickbacks", according to the Nigerian government.
A separate criminal trial related to the 2011 deal over the oil block, known as OPL 245, is continuing in Italy.
The Nigerian government said Shell and Eni assisted "corrupt Nigerian government officials to breach fiduciary duties" in the deal.