Janet Jackson postpones "Unbreakable" tour

LOS ANGELES -- Janet Jackson says she is postponing her "Unbreakable" tour to have an unspecified surgical procedure.

The 49-year-old singer posted a message on her website and social media sites Thursday announcing that all future tour dates had been postponed until the spring. No new dates were announced.

"I need you to know, I learned today, from my doctors that I must have surgery soon. It breaks my heart to tell you that I am forced to postpone the Unbreakable Tour until the spring," the message posted to her Twitter page read. "Every date will be rescheduled. Please hold on to your tickets."

Jackson wrote that the tickets, "will be honored in a special way when the new schedule is announced."

Jackson asked that fans pray for her, her family and entire company during this difficult time.

"There will be no further comment. I love you all so much and am ever grateful for your understanding and your love. Gon' b alright," she wrote.

Jackson had been next scheduled to perform Jan. 9 in Denver.

Jackson canceled her Oct. 9 and Oct. 10 shows at Planet Hollywood Resort & Casino to rest her vocal cords.

Her "Unbreakable" tour has been the Top 20 global concert tour listing compiled by Pollstar.

Jackson's catalog of hits dates back to the mid-1980s, ranging from "What Have You Done for Me Lately" to "That's the Way Love Goes" and "All for You."