Kuwait, July 19 Kuwaiti Emir Sheikh Sabah al-Ahmad al-Saba has been hospitalized for "routine" medical tests, the country's national news agency said.
The agency added that following the 91-year-old's hospitalization on Saturday, he was in "good health" but gave no further details, the BBC reported.
His half-brother and Crown Prince, 83-year-old Sheikh Nawaf al-Ahmad al-Sabah, will "temporarily" take on a number of functions.
Last summer, the Emir was reported to have suffered a health "setback" while in Kuwait.
The following month, he was hospitalised for medical tests during a visit to the US.
Sheikh Sabah has been credited with shaping the Gulf nation's foreign policy and spent decades as foreign minister before becoming emir in 2006.
( With inputs from IANS )