The Queen's husband, Prince Philip was released from a London hospital on Tuesday after being hospitalised for an infection and receiving a heart operation.

Philip, 99, was hospitalized since Feb. 16, when he was taken to the private King Edward VII's Hospital in London for treatment of an infection.

He was later admitted to St. Bartholomew's, a specialist cardiac treatment hospital, for a brief visit before moving back to King Edward VII's.

The coronavirus isn't reported to be the cause of Philip's sickness. Philip and Elizabeth both got COVID-19 vaccines in January and decided to promote the case in order to motivate everyone to do the same.

"The Duke of Edinburgh has today been released from King Edward VII's Hospital and has returned to Windsor Castle, following treatment for an infection and a successful operation for a pre-existing condition," Buckingham Palace said in a statement.

"His Royal Highness wishes to express his gratitude to all of the medical staff who cared for him at both King Edward VII's Hospital and St Bartholomew's Hospital, as well as all who has sent him well wishes."

Philip, also regarded as the Duke of Edinburgh, resigned in 2017, making only a few public appearances. Prior to his hospital stay, he was alone with the queen at Windsor Castle, west of London.

His diagnosis came at a tough time for the British monarchy, which has been shaken by a recent Oprah interview with Meghan and Prince Harry. Meghan said in the shocking broadcast that the monarchy established refused to support her after she had suicidal tendencies and that an anonymous member of the family expressed "concerns" about the skin colour of her baby while she was pregnant with her son, Archie.