New information has come to light in the case of missing Whangarei woman Bridget Simmonds.
The 43-year-old mother of two was reported missing on 6 March last year.
Yesterday, police carried out a number of search warrants at properties in the Parakao area.
Detective Senior Sergeant John Clayton said after receiving fresh information today, officers were focusing on a rural area on one of those properties.
He said police had reached a "critical point" in the investigation, but was unable to provide further comment at this stage.