(Associated Press) -- A member of Governor Steve Beshear's office died Sunday.
Spokeswoman Kerri Richardson told the press that Chief of Staff Mike Haydon passed away.
The cause of death is uncertain.
Haydon became Beshear's Chief of Staff in 2010 after Adam Edelen resigned from the position.
Before that, Haydon, who was also once the Mayor of Springfield, served as Beshear's Legislative Director.