Originally published Saturday, October 6, 2018 at 10:11p.m.

LONDON — Art prankster Banksy has struck again.

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In this grab taken from video on Friday, Oct. 5, 2018 people watch as the spray-painted canvas "Girl with Balloon" by artist Banksy is shredded at Sotheby's, in London, A Banksy artwork self-destructed moments after being sold at auction for 1.04 million pounds ($1.4 million), in a prank apparently orchestrated by the elusive street artist. (Pierre Koukjian via AP)

A work by the elusive street artist self-destructed in front of startled auction-goers on Friday, moments after being sold for 1.04 million pounds ($1.4 million). In an Instagram post Saturday, Banksy claimed the dramatic artistic payoff had been years in the making.

The spray-painted canvas "Girl With Balloon" went under the hammer at Sotheby's in London, fetching more than three times its pre-sale estimate and equaling a record price for the artist.

Then, as an alarm sounded, it ran through a shredder embedded in the frame, leaving half the canvas hanging from the bottom in strips.

A post on Banksy's official Instagram account showed the moment — and the shocked reaction of those in the room — with the words "Going, going, gone..."