Former football star Diego Maradona, 46, has been taken to hospital in the Argentine capital, Buenos Aires.
Maradona, who led his team to victory in the 1986 World Cup and is revered in his country, has suffered from health problems in the past.
He has battled both his weight and an addiction to cocaine. He has also been in hospital twice with heart problems.
No reason was given for his admission, but the hospital said it was "not linked to his addiction to drugs".
The statement issued by the Guemes hospital said Maradona was suffering from "an imbalance" and was undergoing tests.
"He's staying, he's staying... his life is not in danger," said his personal doctor Aldredo Cahe, speaking outside the hospital.
His two daughters, Dalma and Giannina, were seen arriving at the hospital a few minutes after he was admitted.
Families of patients on the 13th floor of the hospital were asked to leave and police and security guards were brought in to control the area.
Maradona is still revered in Argentina and his fans will be watching and waiting for any news of their idol, the BBC's Daniel Schweimler reports from Buenos Aires.-bbcnews.com
I hope the guy recovers and gets treatment to fight these addictions.