Sotheby’s 'Banksy-ed'
Anny Shaw at The Art Newspaper:
Girl with a Balloon (2006) was the final lot of the night, and just as the canvas hammered at £860,000, or £1.04m with fees—just above his auction record in pounds achieved in 2008—an alarm was triggered inside the work of art. Onlookers turned just in time to see the canvas slip through its faux-gilt frame and be shredded into pieces.