The following statement from former President Jimmy Carter, who will turn 91 in October, was released by the Carter Center in Atlanta:

"Recent liver surgery revealed that I have cancer that now is in other parts of my body. I will be rearranging my schedule as necessary so I can undergo treatment by physicians at Emory Healthcare. A more complete public statement will be made when facts are known, possibly next week."

Last week, the Carter Center had disclosed the the former president had undergone elective surgery to "remove a small mass in his liver."

Carter, 90, was the nation's 39th president. After leaving the White House, he founded the center in Atlanta in 1982 to promote health care, democracy and other issues globally.

He has remained active for the center in recent years, making public appearances at its headquarters in Atlanta and traveling overseas including a May election observation visit to Guyana cut short when Carter developed a bad cold.

Carter Center spokeswoman Deanna Congileo called the surgery earlier this month "elective" and said Carter's "prognosis is excellent for a full recovery. She declined to answer further questions at the time.