The criminal hearing against the operator of a jumping castle at the centre of the Hillcrest Primary School tragedy that killed six children in December 2021 has begun in the northern Tasmanian city of Devonport. Chace Harrison, Jalailah Jayne-Maree Jones, Zane Mellor, Addison Stewart, Jye Sheehan and Peter Dodt were killed when the jumping castle they were playing on became airborne at the end-of-year school celebration.