Police investigating the Northern Bank robbery have carried out a search in the Ballynahinch area.
The £26.5m cash raid took place in December 2004
The PSNI said no arrests were made in connection with the search on Thursday.
It is understood it was carried out as a result of a forensic examination of an evidential sample taken during the investigation.
The £26.5m robbery at the Northern Bank headquarters in Belfast city centre in December 2004 was one of the biggest in the history of the UK.