Billionaire And Daughter Dead In Bahamas Chopper Crash

US billionaire coal entrepreneur Chris Cline and his daughter were among seven killed in a helicopter crash in the Bahamas, a spokesman for Cline's lawyer said.

Lawyer Brian Glasser's spokesman Joe Carey said Cline and his 22-year-old daughter Kameron were on board the helicopter when it went down off Grand Cay island.

Seven bodies were recovered and police identified those killed as four women and three men but did not provide names.

Chris Cline, in 2014. Photo: AAP

Cline worked his way up from West Virginia's underground mines to become one of the country's top coal producers and amass a $US1.8 billion ($A2.6 billion) fortune.

He donated extensively to US President Donald Trump and other Republican politicians.

Bahamian police did not provide a cause of the crash but said an investigation with civil aviation authorities was under way.