NEW YORK — Liza Minnelli has checked herself into rehab and is making “excellent progress,” her spokesman says.

“Minnelli has valiantly battled substance abuse over the years and whenever she has needed to seek treatment she has done so. She is currently making excellent progress at an undisclosed facility,” Scott Gorenstein said Wednesday.

The 69-year-old entertainer, who has had alcohol and drug addictions, is one of the few artists to win an Oscar, a Tony, an Emmy and a Grammy.