A ROYAL New Zealand Air Force (RNZAF) helicopter crashed this morning, killing three and injuring one, as the aircraft made its way to a ceremony marking the nation's day of remembrance for its military personnel, The New Zealand Herald reported. The New Zealand Defence Force confirmed the RNZAF Iroquois helicopter was one of three from Ohakea Air Base going to New Zealand's capital, Wellington, for an Anzac Day dawn service. Police were alerted to the crash at 6:45am local time. They could not confirm if all four passengers on board were Air Force personnel.