Prince William and The Duchess of Cambridge, née Kate Middleton, have issued a legal warning against a photographer who they believe is "harassing" their baby son Prince George.
The royal couple sent out the request via their lawyers, a move which Kensington Palace confirmed in a statement.
The legal action comes after an incident in a central London park last week, when William, 32, was concerned that a paparazzo was following George and his nanny and monitoring their daily routine.
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The photographer was said to be following Prince George and his nanny in a central London park
The photographer was warned off and asked to move on by a royal protection officer.
"There is reason to suspect that the individual may have been placing Prince George under surveillance and monitoring his daily routines for a period of time," revealed the palace statement.
It added: "The Duke and Duchess understand the particular public role that Prince George will one day inherit but while he is young, he must be permitted to lead as ordinary a life as possible.
"No parent would tolerate the suspicion of someone pursuing and harassing their child and carer whilst their child is playing in a public park or going about their daily activities."
Prince William was said to be concerned that George's daily routine was being monitored
It is believed that William and Kate, 32, are not taking legal action at this stage.
According to the editors' code of practice by the Independent Press Standards Organisation, young children "must not be interviewed or photographed on issues involving their own or another child's welfare unless a custodial parent or similarly responsible adult consents".
Prince William and Kate have released official family portraits over the past year
Prince George has starred in various official photographs released by the palace, with the most recent shared in celebration of his first birthday last July.
In the heart-warming snaps, royal fans were touched to see how much the royal baby had grown and how he had developed strong walking skills. Proud dad William had previously revealed that George was opening doors and "charging around" on his own two feet.
The royal baby will be welcoming a younger brother or sister in April or May next year, when Kate is due to give birth. The Duchess is thought to be about ten weeks pregnant with her second child and is still suffering from severe morning sickness, as she did when she was expecting George.