Thieves broke into the grounds of Windsor Castle and stole two vehicles from royal land, police said, in a major breach of security.

Burglars broke into the grounds of Britain's royal Windsor Castle in October and stole two vehicles, it has emerged.In a statement to NBC News on Monday, Thames Valley Police said it received a report of a burglary "at a property on Crown Estate land" at around 11.

Police are investigating a burglary minutes from Prince William and Princess Kate's house and within the Windsor Castle estate. A pick-up truck and a quad bike were taken in the night time raid through the closest exit to William and Kate's Adelaide Cottage.

Two masked men reportedly broke into a farm on the Windsor Castle estate close to the home of Kate Middleton, Prince William and their three children — Prince George, Prince Charlotte and Prince Louis — last month.

Two masked men broke into Britain's royal Windsor Castle estate last month and stole two vehicles from a barn, the Sun newspaper reported on Monday.

The Prince and Princess of Wales upped sticks from London several years ago to move to Windsor where they reside at Adelaide Cottage - and the move was a big one in more ways than

Windsor Castle has been raided by two masked men, whilst Prince William, Kate Middleton, and their children slept in the estate's Adelaide Cottage.

The offenders entered a farm building and and “made off with a black Izuzu pickup and a red quad bike,” Thames Valley Police told NBC News in a statement Monday.

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Two men reportedly climbed a six foot fence during the night to steal farm vehicles. The crooks are said to have then driven off in a pick-up truck and on a quad bike that had been stored in a barn.