FRANKFORT, Ky. (AP) - Bill Nighbert, a former state transportation secretary for former Gov. Ernie Fletcher, has resigned his post as a top aide in the Republican-controlled Senate.
Senate President David Williams says Nighbert left his job as a top aide approximately 10 days ago. Williams says Nighbert was hired to work on transportation issues with the expectation only staying a short time.
Federal investigators have been questioning former Transportation Cabinet employees as part of a possible criminal probe.
Nighbert's attorney Howard Mann says Nighbert was only planning
to work for the Senate during the legislative session.

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