Police have released CCTV footage in an effort to track down a couple who may have seen an Invercargill man missing for more than a month.
Police had already released CCTV footage showing Mr Horn walking in Queens Park on the morning of February 15, between approximately 10.20am and 11am.
Raymond Horn, who has dementia, walks with a limp and is non-verbal, went missing from Walmsley House, a rest-home in Richmond, Invercargill on Monday, February 15.
Senior Constable David Loader said despite an extensive search, Mr Horn had not been found.
Yesterday, police released CCTV footage of a couple who were in Queens Park later that day, in an effort to identify and speak to them.
"They may ... be able to provide valuable information."
■Police call 105, file number 210215/8028.