The end of the probe, which was being conducted under the US Foreign Corrupt Practices Act (FCPA), will see no regulatory action taken against the Houston-based independent.

The development follows a 2015 decision from the US Securities & Exchange Commission to drop its parallel investigation into allegations of connections between senior Angola government officials and Nazaki Oil & Gaz, an Angolan former partner of Cobalt in some of its deep-water, pre-salt blocks in the West African country.

Cobalt’s