A government spokesman says Guinea-Bissau's president has been sent to a hospital in Dakar, Senegal after falling ill.
Aniceto Alves says President Malam Bacai Sanha was transferred out of the country by a military plane on Saturday. Alves on Sunday would not confirm what illness caused the hospitalization.
Sanha suffers from diabetes. He had also been flown to Senegal after falling ill last year, and was then hospitalized in France.
Sanha was elected president of Guinea-Bissau with over 63 percent of the vote in July 2009. It was a rare, peaceful transition of power in the tiny West African nation, which has been wracked by coups, countercoups and a civil war.
The country's ex-president, Joao Bernardo "Nino" Vieira, was assassinated in March 2009.