Andrew Mountbatten-Windsor was arrested Thursday on suspicion of misconduct in public office, according to a police statement. Officers also carried out searches at properties in Berkshire and Norfolk as part of the investigation. Although authorities did not name him directly, they confirmed that a man in his sixties remains in custody. Mountbatten-Windsor marked his 66th birthday the same day. Police emphasized the need to safeguard the integrity of their inquiry, noting the intense public attention surrounding the…