A man was arrested after being discovered within the grounds of the Prince of Wales's London residence, St James's Palace, it has emerged.

A cleaner discovered the man at 0615 BST on Wednesday in Lancaster House, Scotland Yard confirmed.

Lancaster House is within the environs of St James's Palace and normally used for Government conferences and receptions.

The Prince was in London on that night.

A Scotland Yard spokesman said of the intruder: "He was arrested and taken to Charing Cross police station. He was later released with no further action taken."