Saudi Arabia s King Salman bin Abdulaziz Al Saud. AFP
Crown Prince Mohammed bin Salman, "reassures everyone about the health of King Salman, the Custodian of the Two Holy Mosques", the official Saudi Press Agency (SPA) said on social media.
Prince Mohammed also voiced "gratitude to everyone who inquired about King Salman's health" and prayed for his "speedy recovery".
His comments came at the weekly cabinet meeting that King Salman usually attends, though he was absent on Tuesday.
On Sunday, the Royal Court announced that the king had a lung infection and was undergoing treatment with antibiotics. Earlier that day, a statement reported that he was experiencing a high fever and joint pain.
Prince Mohammed canceled a planned trip to Japan "due to the health condition of King Salman", Japan's top government spokesman said on Monday.
King Salman has been on the throne since 2015, although 38-year-old Prince Mohammed was named crown prince in 2017.
* This story was edited by Ahram Online.
Short link: