Country singer Randy Travis is in critical condition at a Dallas hospital where he is being treated for acquired viral cardiomyopathy, his publicist said Monday.

The Grammy winner was admitted to the unidentified medical facility Sunday. No other details were released.

Cardiomyopathy weakens and enlarges the heart, making it more difficult for the muscle to pump blood and can lead to heart failure.

Travis, 54, is best known for "Three Wooden Crosses," "Forever and Ever, Amen," "Diggin' Up Bones," and "Deeper Than the Holler."

His hospitalization is the latest in a series of tough developments for the singer.

He pleaded guilty to driving while intoxicated in January following his arrest last year when he was found naked after crashing his Pontiac Trans Am.

Travis was sentenced to two years of probation, fined $2000 and given a 180-day suspended jail sentence. He was required to spend at least 30 days at an alcohol treatment facility and complete 100 hours of community service.