Former US President Bill Clinton has been admitted to a hospital after developing a fever, according to a spokesman for the Democrat.

"He remains in good spirits and deeply appreciates the excellent care he is receiving," Angel Ureña wrote on X, formerly Twitter.‪

He said Clinton was admitted to Georgetown University Medical Center in Washington, DC on Monday evening for tests and observation after developing the fever.

Mr Ureña's statement did not give more details on the Arkansas Democrat's condition, though US media reports indicate Clinton is expected to recover.

A source close to Clinton told NBC News that the situation is "not urgent" and the former president would be "fine." The news network reported Clinton was awake and alert.

This is the latest health scare for the 42nd US president, who served in the White House from 1993 to 2001.

Clinton, 78, was last admitted to the hospital for six days in 2021 in California after developing an infection in his blood. He is also known to have suffered with heart issues in the past.

In 2004, aged 58, he had a quadruple bypass surgery after doctors found signs of extensive heart disease and, ten years later, he had a clogged artery opened after complaining of chest pains.

Not long after his second surgery, the ex-president - known for his love of fatty foods - went vegan. He told Politico in 2016, "I might not be around if I hadn't become a vegan. It's great."

Clinton was active on the presidential campaign trail this year, as he travelled the country to boost Vice-President Kamala Harris's bid for president.

Last month, he released his latest book, Citizen: My Life After the White House.