PORTLAND, Ore. (AP) - After a break of more than two years, the Oregon Government Ethics Commission will resume its investigation into whether Cylvia Hayes used her relationship as the fiancee of former Gov. John Kitzhaber to win contracts for her green-energy consulting business.

The ethics commission suspended its preliminary review of Kitzhaber and Hayes in February 2015, when it learned a criminal investigation was under way.

The U.S. Department of Justice announced last week the pair will not face charges.

More: Kitzhaber 'vindicated' after learning he won't face criminal charges

With the criminal case out of the way, the ethics investigation resumes.

Kitzhaber has maintained he did nothing wrong. He said he resigned in 2015 because the media frenzy prevented him from being an effective leader.

Related: Feds decide no charges for ex-Gov. John Kitzhaber & Cylvia Hayes