Nigeria's anti-corruption agency is to charge former US Vice-President Dick Cheney over a bribery scandal that involves a former subsidiary of energy firm Halliburton.
The case centres on engineering firm KBR, which admitted bribing officials.
A lawyer for Mr Cheney said allegations he was involved in the scandal were "entirely baseless".
Mr Cheney was Halliburton's chief executive before becoming vice-president to George W Bush in 2001.
A spokesman for the anti-corruption agency, Femi Babafemi, said the charges were likely to be brought against Mr Cheney next week.
Mr Babafemi said the charges were "not unconnected to his role as the chief executive of Halliburton".
KBR last year pleaded guilty to paying $180m (£115m) in bribes to Nigerian officials prior to 2007, when it was a subsidiary of Halliburton. The firm agreed to pay $579m (£372m) in fines related to the case in the US.
But Nigeria, along with France and Switzerland, has conducted its own investigations into the case.
Mr Cheney's lawyer, Terence O'Donnell, said US investigators had "found no suggestion of any impropriety by Dick Cheney in his role of CEO of Halliburton".
"Any suggestion of misconduct on his part, made now, years later, is entirely baseless," Mr O'Donnell said. BBC News
