The identity of a mystery royal protection officer who advised Meghan Markle against making a letter public, which contained child abuse allegations concerning her father Thomas Markle, may never be revealed, according to insiders.

The former Metropolitan Police officer's identity could remain concealed due to potential loyalties to either Meghan or the Royal Family, a former royal protection officer told the Daily Mail. Meghan's spokesperson has not commented on whether she has provided the officer's name.

The officer reportedly handed Meghan a letter with allegations and advised her to "leave it with us, we'll investigate it." No action was subsequently taken, and the Metropolitan Police's handling of the matter is currently under investigation by the Independent Office for Police Conduct (IOPC).

Sources suggest the officer may have already retired. The investigation into the officer's identity could be prolonged, with the possibility that the dispute might "run on for years" if the IOPC broadens its inquiry.

Thomas Markle Sr.'s granddaughter, Noel Rasmussen, has reacted with shock to further findings by the Daily Mail, which uncovered a stash of sexually explicit materials in a storage locker rented by Markle in Mexico. The Daily Mail alerted the FBI, leading to a raid by Mexican authorities. Markle is also being investigated by authorities in the Philippines for similar material found at his former home. Rasmussen stated that she unwittingly helped send the letter to Meghan's security team in London, unaware of its contents. She described the allegations as "shocking" and "disturbing."

Meghan has previously stated that she cut ties with her father in 2019 after learning of disturbing allegations against him. In a statement, she mentioned receiving assurances that these allegations were being investigated by authorities after a letter was sent to the Metropolitan Police and Royalty and Specialist Protection in 2018. She expressed her distress and hoped for justice and the protection of children.