A crane has toppled into Sydney Harbour close to amusement park Luna Park as witnesses describe hearing a "huge bang".
Luke Bayly described how he was sitting on the opposite side of Sydney Harbour when he saw the crane collapse at around 1:00pm.
The crane was operating around Milsons Point, an affluent suburb on the lower North Shore of Sydney.
"It was a huge bang, it startled me, I thought a bomb had gone off," he told ABC News.