Steel Magnolia's Joshua Scott Jones has entered treatment for alcohol and substance abuse.
He made the announcement Thursday afternoon on the duo's web site.
Jones wrote: "God has been on my heart to announce and make public that I have entered a rehabilitation and treatment facility to address issues related to alcohol and substance abuse.
"Hundreds of thousands of people in the world struggle with these battles daily, therefore I am sincerely grateful for all thoughts and prayers at this very poignant juncture in my life and career."
Jones' girlfriend and singing partner, Meghan Linsey, announced Sept. 23 that the duo would cancel a handful of shows because the 31-year-old was unable to perform, but didn't specify why. Linsey began playing Steel Magnolia's scheduled tour dates alone Sunday.
The duo released its debut album earlier this year and is nominated for the vocal duo of the year award at the Country Music Association Awards in November.