The 79-year-old, who’s been at the helm for 18 years, will be treated until early next week.
Blatter is currently under criminal investigation for financial misconduct involving UEFA President Michel Platini.
Leading up to his admission to hospital, outgoing Fifa boss was reportedly advised to take several days off for stress-related issues.
Blatter has been suspended for 90 days with the UEFA boss for alleged finical misconduct and is now the subject of a criminal investigation carried out by Swiss authorities.
