According to ESPN, on the evening of September 16, the famous athlete had reflux, which is why they decided to transfer him to intensive care as a precaution.
At the same time, the state of the 80-year-old Brazilian remains stable.
As a player, Pele won the World Cup three times with the Brazilian national team - in 1958, 1962 and 1970.
He is Brazil's top scorer in history with 77 goals.
Earlier it was reported that Pele underwent surgery to remove the tumor.