A passerby said the glass shattered out of the blue. A glass overhead panel at the entrance of the Spark building on Wellington's Boulcott St has shattered over the pavement. KEVIN STENT/STUFF Spontaneous breakage of a large panel of glass at the Spark Building on Boucott St on Friday morning. The 103-metre building at 1 Willis St, previously known as the BNZ Tower and the State Insurance building, lost a window in January. A phenomenon called spontaneous glass breakage - in which toughened or tempered glass can spontaneously break - was identified as the likely problem.

Source: Stuff December 26, 2019 21:45 UTC