This video was seen live as it happened.
According to the YouTube description accompanying the video:
A helicopter has crashed in central Auckland while installing the Telecom Christmas tree. The seven-storey-high tree was being put up near the Te Wero Island bridge connecting the Viaduct and Wynyard Quarter on the waterfront.
The crew and pilot are OK, Telecom says. A St John ambulance spokesman said it was taking one person to Auckland City Hospital with minor to moderate injuries.
The accident around 10.30am was seen live on the TVNZ website as it was streaming the event.