Ai Weiwei's work was allegedly destroyed by Vaclav Pisvejc, who is known for targeting works of art as part of his "vandalism" practice.
"The man destroyed the large blue and white Porcelain Cube at a busy private opening for the exhibition “Who am I?” at Palazzo Fava in Bologna on the evening of September 21. Local police arrested a 57-year-old Czech man who has been identified in Italian media as Vaclav Pisvejc, a provocateur and self-proclaimed artist known for targeting important works of art."