Saudi King Salman bin Abdulaziz Al Saud attends the Arab League summit in Tunis, Tunisia, March 31, 2019. (Xinhua)

Saudi Arabia's King Salman arrived at a planned Red Sea megacity to "rest and recuperate," state media said Thursday, after the 84-year-old ruler underwent surgery to remove his gall bladder.

The kingdom has sought to quell speculation over the health of the ageing monarch, who has ruled the top oil exporter and the Arab world's biggest economy since 2015.

"The Custodian of the Two Holy Mosques King Salman arrived in Neom, where he will spend some time to rest and recuperate," the official Saudi Press Agency said in a brief statement.

State television showed the king standing on an escalator descending from a plane and later arriving in a convoy of cars at what appeared to be a royal palace in Neom, an area in the kingdom's northwest that is currently under development.

The king left Riyadh's King Faisal hospital on July 30 after a 10-day stay following a laparoscopic surgery to remove his gall bladder, according to the royal court.

A video released by state media, apparently aimed at dispelling rumors about the king's health, showed him chairing a virtual cabinet meeting from hospital.

It is rare for the secretive kingdom to report on the health of the monarch.

In 2017, Saudi Arabia dismissed reports and mounting speculation that the king was planning to abdicate in favor of his son Crown Prince Mohammed bin Salman, who is seen as the de facto ruler.

AFP