Three members of the Nelons, a Gospel Music Hall of Fame quartet, as well as the chairman of the board overseeing the Georgia Department of Corrections, were among seven people killed in a plane crash in Wyoming, according to a statement by a group member who was not aboard the aircraft.

Nelons co-founder Kelly Nelon Clark, her husband, Jason Clark, and their daughter Amber Nelon Kistler died in the crash on Friday afternoon, according to a statement from another daughter, Autumn Nelon Streetman. She is the fourth member of the Georgia-based quartet.

"Thank you for the prayers that have been extended already to me, my husband, Jamie, and our soon-to-be-born baby boy, as well as Jason's parents, Dan and Linda Clark," Nelon Streetman said. "We appreciate your continued prayers, love and support as we navigate the coming days."

Also killed in the crash were Nelon Kistler's husband, Nathan Kistler, family friend Melodi Hodges, and Larry and Melissa Haynie, according to Nelon Streetman.

There were no survivors.

Larry Haynie, who chaired the Georgia Board of Corrections, was remembered for "a career of valued public service," according to a statement from Georgia Gov. Brian Kemp.

"Our entire family is asking everyone to join us in praying for those who have been lost, for their loved ones and communities, and for those throughout the gospel music community who have lost dear friends in this heartbreaking accident," Kemp said.

En route to gospel cruise

The group was travelling to join the Gaither Homecoming Cruise to Alaska, said a statement from Gaither Music Group, the sponsor of the cruise that features numerous gospel singers and groups.

Gaither Music said Hodges was an assistant for the band, Larry Haynie was pilot of the aircraft and Melissa Haynie was his wife. The aircraft was identified as a single-engine turboprop Pilatus PC-12/47E.

The crash occurred at about 1 p.m. in Campbell County, Wyo., north of Gillette and about 400 kilometres north of Cheyenne, said a statement from Campbell County spokesperson Leslie Perkins.

Campbell County Fire Department Chief Jeff Bender said in a statement on Saturday that a fire caused by the crash has been contained to less than one square mile and that firefighters would remain on the scene throughout the day.

U.S. National Transportation Safety Board spokesperson Keith Holloway said Saturday that preliminary information indicated the plane crashed following an "auto pilot issue during flight" and a team of investigators was headed to the site.

"The aircraft is in a remote location, and once they gain access, they will begin documenting the scene, examining the aircraft," Holloway said. "The aircraft will then be recovered and taken to a secure facility for further evaluation."

A preliminary report on the crash is expected in about 30 days, while a final report with the probable cause of the crash could take up to two years to complete, Holloway said.

The Nelons were inducted into the Gospel Music Hall of Fame in 2016 and were winners of 10 GMA Dove Awards, including multiple song of the year and album of the year awards.