A toilet made from solid 18-carat gold has been stolen in a burglary at Blenheim Palace.
The artwork was taken by a gang from the Woodstock stately home during an overnight break-in at about 04:50 BST, Thames Valley Police said.It was part of an exhibition by Italian conceptual artist Maurizio Cattelan that opened on Thursday.
The toilet - entitled America - has not been found but a 66-year-old man has been arrested,.
The 18th Century palace is a World Heritage Site and the birthplace of Sir Winston Churchill. It is currently closed while investigations continue.
Det Insp Jess Milne, 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.
"Due to the toilet being plumbed in to the building, this has caused significant damage and flooding.
"We believe a group of offenders used at least two vehicles during the offence."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."
In a tweet Blenheim Palace said it would be shut until at least 14:00 BST due to "an unforeseen incident".
The gold toilet was famously offered to US President Donald Trump in 2017.