Prince Williamhas publicly addressed the health of his grandfather Prince Philip.

William, 38, exchanged a few words on Monday with longstanding royals photographer Arthur Edwards, who asked him how Philip, 99, was doing.

“He’s okay,” said William. “They’re keeping an eye on him.”

Philip was admitted to King Edward VII Hospital in London on February 16 after “feeling unwell,” the palace said.

Prince Philip.Royal Family/Twitter

Prince Philip, 99, Issues Rare Statement to Wish Educators Happy Holidays

Prince Charles visiting his father Prince Philip on Saturday.Alberto Pezzali/AP/Shutterstock

Prince Charles

William spoke with Edwards at a vaccine center in Norfolk, not far from his country home, Anmer Hall, where he and wifeKate Middletonand their children have been living during the latest U.K. lockdown.

Philip had been expected to remain in the hospital for a few days but on Friday, a royal source told PEOPLE that he would stay there into this week.

Can’t get enough ofPEOPLE’s Royals coverage?Sign up for our free Royals newsletterto get the latest updates onKate Middleton,Meghan Markleand more!

Queen Elizabeth wearing her honeymoon brooch on her wedding anniversary in Nov. 2020.Chris Jackson/WPA Pool/Shutterstock

<strong>strictly under embargo until 2200hrs GMT on Thursday 19th November 2020</strong>

Palace sources stressed after Tuesday’s admission to the hospital that this was not an emergency admission and that Philip walked into the hospital unaided. The illness is not COVID-19-related.

Philip had a visit from his eldest sonPrince Charles, 72, on Saturday. Charles was photographed arriving at the hospital, via a rear entrance, wearing a gray suit and a face mask.

William’s visit to the Norfolk vaccine center was his first official duty away from home this year. During the appearance, William — whocontracted the coronaviruslast April — met some of those being vaccinated and spoke to National Health Service staff and volunteers about their experiences of being a part of the largest vaccination program in British history.

He made the short journey from Anmer Hall, where he, Kate and their kidsPrince George,Princess CharlotteandPrince Louishave been staying during the latest U.K.-wide lockdown due to the coronavirus pandemic.

source: people.com