Search teams have found the wreckage of a small plane that disappeared over the weekend carrying 11 people including two Britons, a spokesman for Cameroon's government said.
Issa Tchiroma Bakary said the missing plane was discovered in dense jungle inside Republic of Congo, but no survivors were found.
The aircraft, chartered by Australian company Sundance Resources, disappeared on Saturday half an hour after it left Cameroon's capital, Yaounde, en route for Yangadou in Republic of Congo to visit an iron ore mining site, Cameroon's government said.
Eleven people had been aboard - two Britons, six Australians, two French and an American.
Among the passengers were Sundance chairman Geoff Wedlock and chief executive Don Lewis. Trading in Sundance Resources shares was put on hold because of the incident.
The search was co-ordinated by Cameroon, Gabonese and Republic of Congo authorities with support from Australian, Canadian and US foreign officials.
Earlier, Australian foreign minister Stephen Smith said the plane made two routine radio calls during its flight, one of them 30 minutes after take-off. Neither of the calls indicated the plane was in any trouble. Weather conditions were generally good at the time of the flight.
Sundance executives were in Cameroon to meet officials about the company's Mbalam project, which could earn the west African country billions of pounds over 25 years, according to the Cameroon official.
Sundance has a 90% stake in Cameroon Iron Ore Company which owns more than 1,000 square miles of fields with estimated reserves of 2.2 million tons of mineral resources.