"Yesterday, Jim Irsay took the first step toward regaining good health," the team said in a statement Tuesday. "He voluntarily checked into a highly-respected health care facility and is committed to undergoing the treatment and care necessary to help him meet his challenges head-on.
"Jim, the Irsay family, and the Colts organization are all deeply appreciative of the incredible outpouring of support and compassion from our fans and the Indiana community."
Irsay previously had admitted to seeking treatment in 2002 for addiction issues. Police in the Indianapolis suburb of Carmel said Monday that the 54-year-old Irsay failed several roadside field sobriety tests before he was arrested.
He was booked into the Hamilton County (Ind.) Jail on preliminary charges of one count of operating while intoxicated and four counts of possession of a controlled substance, according to police.
Irsay was released on bail Monday afternoon. He is due back in court on March 26.