A rare piece of artwork from notorious street artist Banksy went up for auction last night — only to self-destruct moments after it was sold.

According to The Art Newspaper, a copy of one of Banksy’s better-known works, Girl With Balloon, was auctioned at Sotheby’s in London, garnering a record-setting bid of $1.4 million. Once the bidding had come to a close on the iconic piece, the artwork started to sound an alarm and was subsequently destroyed by a shredder hidden within the frame. Staff proceeded to rush the artwork out of the room before it could be fully shredded.

“It appears we just got Banksy-ed,” noted Alex Branczik, Sotheby’s European head of contemporary art. “He is arguably the greatest British street artist, and tonight we saw a little piece of Banksy genius.” Branczik insisted that Sotheby’s was “not in on the ruse.”