The Crown Jewels are safe, but a breach in security at the Tower of London had staff furiously swapping out the locks over the weekend.
It appears a thief was able to scale two large gates at London's iconic fortress before snatching a bunch of keys from a metal box at a sentry post, The Sun reports. The stolen keys were used to unlock drawbridges and gain access to conference rooms and a restaurant.
The historic castle, located on the north bank of the River Thames in central London, is notorious for once housing prisoners about to be beheaded. It is famously guarded by the Yeoman Warders, or Beefeaters, who are backed up by a private security firm.
The Tower of London is one of England's most popular tourist attractions. The tradition of housing the Crown Jewels at the site is believed to date back to the reign of Henry III.