King Charles III has been diagnosed with an undisclosed type of cancer, Buckingham Palace said Monday. While the King recently underwent treatment for an enlarged prostate, the Palace said his diagnosis was not prostate cancer in a statement on Monday. The statement also adds that the monarch began receiving cancer treatment. “The King is grateful to his medical team for their swift intervention, which was made possible thanks to his recent hospital procedure. He remains wholly positive about his treatment and looks forward to returning to full public duty as soon as possible,” the statement said. The King’s royal engagements have been postponed, with other senior members of the family expected to stand in on his behalf. The palace added he has chosen to share details of his illness to “prevent speculation” and further public understanding for others who have been diagnosed with cancer. The King’s health has been a public focus this month since he was admitted to hospital on Jan. 26 for a pre-planned procedure to correct his enlarged prostate, otherwise known as a benign prostatic hyperplasia (BPH). This is a developing story, please check back for updates.