Britain's Catherine, Duchess of Cambridge, carries her son Prince George
Britain's Catherine, Duchess of Cambridge, carries her son Prince George alongside her husband Prince William as they visit the Sensational Butterflies exhibition at the Natural History Museum in London, July 2, 2014. Prince George celebrates his first birthday on July 22. Picture taken July 2, 2014. REUTERS

An angry Prince William has reportedly sent a legal letter to an unknown freelancer photographer for stalking his 13-month old son Prince George as he goes with his daily tasks. William reportedly felt that the photographer was following little George and his nanny for quite some time and was keeping a close eye on his daily activities which amounts to "harassment."

Prince William, Kate and Prince Harry are of the opinion that a "line has been crossed" after the photographs of royal baby with his Spanish nanny Maria Borrallo were taken during their visit to a central London Park and later published in foreign media.

"The Duke and Duchess have taken legal steps to ask that an individual ceases harassing and following both Prince George and his Nanny as they go about their ordinary daily lives. An incident last week has prompted Their Royal Highnesses to seek reasonable assurances from the individual about his behaviour," said the Kensington Palace in a strong statement on Thursday, according to Mirror.

The Palace believes that they have a reason to suspect that the individual "may have been placing Prince George under surveillance and monitoring his daily routines for a period of time." The statement also added that the Duke and Duchess do understand that George has a public role in future but strongly believe that the baby should be "permitted to lead as ordinary a life as possible."

The Kensington palace further revealed that it is not tolerable to any parent that their child and nanny is "harassed" while they carry out their daily activities like going to the park for playing. "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," the statement added.

The Royals have not disclosed the name of the photographer in their statement but revealed that he has been confronted for his actions. The Royals took a strong stance against a photographer even when topless photos of Kate Middleton were clicked by a paparazzi while she were holidaying in 2012. Prince William's mother Princess Diana was killed when her vehicle crashed while trying to escape a chase by the paparazzi in 1997.