Saudi Arabia's King Salman bin Abdulaziz will undergo medical tests on Sunday due to "high temperature and joint pain", state news agency SPA reported.
The examinations will be conducted at the royal clinics at Al Salam Palace in Jeddah. The king, 88, was last admitted to hospital in April for a routine checkup, state TV reported then.
King Salman, the custodian of Islam's holiest sites, became ruler of the world's top oil exporter in 2015 after spending more than 2 1/2 years as the crown prince and deputy premier.

Suspect in Monaco bombing found dead in Ukraine
Blasts rock Damascus during Macron visit
Britain's Farage quits parliament in protest, but will stand for re-election
French court shortens Le Pen's ban from office but orders electronic tag
Israeli strikes kill two people in Gaza, medics say
At least 5 dead in major landslide in India's Wayanad
Trump says there will either be a deal with Iran or US will 'finish the job'
Storms kill at least eight in central China as Typhoon Bavi looms offshore
