Trace Adkins went off on an impersonator during karaoke on a cruise. The incident knocked Trace off the wagon and he checked himself into rehab. 

A representative for Trace Adkins told CNN that the country music has checked into rehab facility for help with alcohol abuse after he got into an alleged brawl with an impersonator on the Norwegian Pearl. The rep said Trace Adkins suffered "a setback in his battle with alcoholism."

The New York Daily News reports Adkins had been sober for 12 years since his first stint in rehab back in 2002.

Trace Adkins was the headliner on a seven-day country music cruise for Norwegian Cruise Lines along with other acts including Montgomery Gentry and Wynonna Judd. It was karaoke that caused his relapse into alcoholism.  According to TMZ.com Trace Adkins was in the cruise ship bar when he heard an impersonator doing one of his songs at karaoke and the fight started.

One of Trace Adkins people put out a statement saying "As he faces these issues head-on, we ask that his family's privacy will be respected."

Trace Adkins is a member of the Grand Ole Opry. Before he became country music star in the nineties, Adkins as a pipe-fitter on an offshore drilling rig. He was a finalist on Donald Trump's NBC reality series Celebrity Apprentice in 2008. Adkins won the All-Star version of the show in 2013. Trace Adkins has sold 10 million albums. He was nominated for a Grammy and co-hosted the American Country Awards with NASCAR driver Danica Patrick on Fox. Adkins played a biker in the movie "The Lincoln Lawyer" with Matthew McConaughey in 2011. His 2007 autobiography was called "A Personal Stand: Observations and Opinions from a Freethinking Roughneck."

The cruise will continue without Adkins.