A tramper who is missing near Lewis Pass was last seen at 1pm yesterday.
A search is under way for Brigitte Visagie, who is missing in the Nina Valley area, between Lewis Pass Road and Nina Hut, in Canterbury.
The 56-year-old walked to Nina Hut with two companions on Friday, police say.
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They trio stayed the night and began walking back to State Highway 7 yesterday.
Brigitte became separated from her companions and was last seen at the Nina swing bridge about 1pm yesterday, police said in a statement.
She was wearing a blue rain jacket, orange fleece windbreaker, and long grey pants.
She was carrying a grey Macpac pack, possibly with a yellow pack cover.
Police would like to hear from anyone who may have seen Visagie – particularly a party of trampers who may have seen or spoken to her near the Nina swing bridge.
Anyone with information is asked to call Christchurch Central police on 03 363 7400.