Rolls-Royce is in talks with the Serious Fraud Office in Britain over possible bribery and corruption.
The SFO has asked it to conduct an internal inquiry into possible payments of bribes in Indonesia and China by intermediaries.
The intermediaries involved are domestic companies that provide sales and distribution, and repair and maintenance services for Rolls-Royce in some countries.
The BBC reports that the request prompted Rolls-Royce to bring in a legal firm to conduct an internal investigation earlier this year.
This uncovered potential misbehaviour in other countries as well as the two named by the SFO.
Some of the accusations date back more than 10 years.
Control Risks Group deputy director Chris Torrens said Rolls Royce is operating in a difficult environment in China where corruption is rife within the public sector.