ROCHESTER, Minn. -- The Dalai Lama remains at Minnesota's Mayo Clinic after cancelling his U.S. appearances for the month of October.

A Mayo spokeswoman confirmed Sunday that the 80-year-old Tibetan Buddhist leader remains at the Rochester clinic for a medical evaluation. No other details were released.

The Dalai Lama's office said Friday in a statement on its website that he has cancelled his planned October U.S. appearances after doctors advised him to rest. The statement gave no more details about the Dalai Lama's condition, and there was no update on the website as of Sunday. The Dalai Lama lives in exile in India.

Among the Dalia Lama's cancelled appearances next month was a planned visit to the University of Colorado in Boulder as well as appearances in Salt Lake City and Philadelphia.