Nebraska Lieutenant Governor Rick Sheehy has resigned effective immediately.
Governor Heineman announced the resignation at a quickly called news conference this morning.
Heineman says the resignation followed disclosures made in a public records request, but declined to comment further.
Sheehy had been considered the front-runner for the 2014 Governor race and had been endorsed by Heineman.
Heineman says a search for Sheehy's replacement will start immediately.