Police are searching for a solid gold toilet stolen from the birthplace of .
The loo - part of an art exhibition at - was taken in the early hours of Saturday, Thames Valley Police have confirmed.
The force said they were called to reports of a burglary at the shortly before 5am on Saturday.
Detective Inspector said: "The piece of art that has been stolen is a high value toilet made out of gold that was on display at the palace.
"The artwork has not been recovered at this time, but we are conducting a thorough investigation to find it and bring those responsible to justice."
A 66-year-old man has been arrested in connection with the incident.
The Palace has suffered significant damage and flooding following the burglary, because the loo, designed by Italian artist Maurizio Cattelan, had been plumbed in and was available for visitors to use.
Last month, ahead of the toilet's installation, the Duke of Marlborough's half-brother, Edward Spencer-Churchill, said the lavatory wouldn't be "the easiest thing to nick".
Mr Spencer-Churchill told the Times: "Firstly, it's plumbed in and secondly, a potential thief will have no idea who last used the toilet or what they ate.
"So no, I don't plan to be guarding it."
Blenheim Palace was closed on Saturday following the burglary.
EventSite Design, who work at the site, said on Twitter: "We've had some drama overnight which I won't elaborate on just yet but it has meant we need to redirect our contractor traffic for the day."
