Former Italian Prime Minister Silvio Berlusconi was admitted to Milan’s San Raffaele Hospital on Thursday evening, according to a source close to his Forza Italia party.

“He needed to be hospitalised for a comprehensive clinical check-up,” the person stated, without providing any other information.

Since acquiring coronavirus last September, Berlusconi, 84, has been in and out of hospitals. It was “the most dangerous challenge” of his life, he stated at the time.

The four-times prime minister and billionaire businessman underwent major heart surgery in 2016 and has also survived prostate cancer.

He was last hospitalized in May, when he spent five days at San Raffaele.