A Royal Commission of Inquiry has been announced to look into the causes of the Christchurch terror attack and how it could have been prevented.
Legal historian Grant Morris walks us through what a commission is and what role they've had in New Zealand's constitutional past.
This wooden cross to the victims of the Erebus disaster was erected above Scott Base by recovery workers. On 30 January 1987 a stainless steel cross replaced this original one, which had eroded. Photo: nzhistory.govt.nz