Three boys and one girl aged 12 years, and one girl aged 11 died in the incident in one of Australia's deadliest involving an amusement ride, as tributes and support continued to flow. Another three children remained in the hospital in the accident in a primary school in Devonport, in the northwest of Tasmania state.
"The tragedy which occurred yesterday is beyond comprehension. It is devastating, heartbreaking. It is just simply incomprehensible," Tasmania state Premier Peter Gutwein told reporters.
Some 40 students were taking part in the celebrations when strong winds reportedly caused the jumping castle and several inflatable zorb balls lift around 10 metres (33 feet) into the air. Police said investigations would include if the castle was was properly tied to the ground.