Police in Christchurch are asking for urgent help in finding a missing 85-year-old woman.
Shirley Warrington was last seen on Main South Road in the town of Rolleston, at 7.30pm on Saturday.
A police spokesperson said she may be in the Ferrymead, Heathcote or Horotane Valley Road areas.
Residents are being asked to check their properties, including bushes, outbuildings and tree lines.
Search and rescue teams will be deployed this afternoon.
Police said Warrington might be disoriented and confused, and was not dressed for the cold weather.
Anyone who has any information is asked to call 111 and quote event number P047149632.