Police have suspended the search for missing Christchurch woman Shirley Warrington.
The 85-year-old was last seen on Main South Rd in Rolleston at 7:30pm on Saturday and was believed to have been wearing a black dress.
Det Snr Srgt Damon Wells said despite support from search teams and the public, they have "exhausted all viable search area options" and have decided to suspend the search.
"We have continued to have regular contact with Shirley's family and have advised them of this.
"They understand that we won't hesitate to initiate further physical searches as new information comes to hand.
"While the physical search has been suspended, investigators continue to identify and follow-up new lines of enquiry."
Anyone who has any information is asked to call 111 and quote file number 210711/8724.