Jockey Ashlee Mundy has died in Dunedin hospital after her mount Elleaye fell at the Kurow races in North Otago.
A freelance jockey based on the Gold Coast, Mundy returned to New Zealand from Queensland in mid-December to ride on the South Island's summer circuit.
AAP reports her mount Elleaye fell with 600 metres to run in the seventh race at Kurow in North Otago on Sunday.
Co-chief steward Nigel McIntyre told racing website theinformant.co.nz that it appeared Elleaye had clipped heels with another horse.
Mundy, 26, was flown to Dunedin Hospital in a critical condition with serious head injuries. A spokeswoman confirmed she died on Monday morning.
New Zealand Jockeys' Association president Dave Taylor said that as a mark of respect, all jockeys in race seven at races on Tuesday at Ellerslie, Hastings and Waikouaiti will wear black arm bands.
He said there will also be one minute's silence 20 minutes ahead of the first race.
Ashlee Mundy, from Westport, rode a total of 232 winners in New Zealand.
It is the first time a jockey has died in New Zealand from injuries in a race fall for nearly nine years.
The Racing Integrity Unit will be conducting a full review of the incident and will issue a report after interviewing all jockeys riding at Kurow.
Police have also begun preparing a report on the incident.