UPDATE: KING CHARLES III HAS BEEN DIAGNOSED WITH CANCER

The King has been diagnosed with cancer and has started treatment today, Buckingham Palace has announced.

It is not prostate cancer, but was discovered during his recent treatment for an enlarged prostate.

The type of cancer has not been revealed, but the Palace said the King began "regular treatments" on Monday.

The Palace says the King "remains wholly positive about his treatment". He will postpone his public engagements, with senior royals expected to stand in for him.

The King "looks forward to returning to full public duty as soon as possible", the Palace said.

No further details are being shared on the stage of cancer or a prognosis.

The King informed both his sons personally about his diagnosis and Prince William was said to be in regular contact with his father.

Prince Harry, who lives in the United States, spoke to his father and will be travelling to the UK to see him in the coming days.

©️BBC