A $30,000 reward has been offered for new information surrounding the disappearance of a South Korean woman in Christchurch six years ago.
Yoon Sook Chun went missing from her home in the suburb of Aidanfield early on 18 May, 2009, and hasn't been seen since.
Police say she spoke to her two children briefly before leaving alone through the front door around 6am, and later emailed her family to say she was heading to Auckland for a break.
She was officially reported missing months later in December 2009 and has not used either of her two passports to leave the country since her disappearance.
Detective Sergeant Ross Tarawhiti says a $30,000 reward will be paid to anyone who passes on material information or evidence which establishes the location of Ms Chun or her body, and leads to the conviction of anyone responsible for her disappearance.
"We are hopeful that someone could hold some key information that can help solve this mystery," he says.
"Mrs Chun was last seen six years ago and over that time it is also possible that loyalties will have changed or someone who hoped she would be found without them getting involved will step up and contact police."
The reward will remain in place until October 1, 2015, and anyone with information can contact Christchurch police on 03 363 7400 or visit their local station.