Chris Cline, a billionaire entrepreneur, philanthropist and political donor once called the “King of Coal,” died Thursday in a helicopter crash in the Bahamas that officials said killed seven people.

Local authorities did not immediately identify the victims. But Brian Glasser, a lawyer for Mr. Cline, confirmed that Mr. Cline, who would have turned 61 on Friday, was among the dead. A representative for Mr. Glasser’s firm said that Mr. Cline’s daughter Kameron Cline, 22, had also died.

Jillian Clark and Brittney Searson, 21, recent Louisiana State University graduates, were killed as well, according to NOLA.com. Ms. Clark, Ms. Searson and Ms. Cline were all members of the university’s Phi Mu sorority.

Delaney Wykle, a childhood friend of Kameron’s and a West Virginia University graduate, was also among the victims, The Palm Beach Post reported.