Police are honing in on the movements of a car used by an alleged kidnapper, as the search continues for Christchurch real estate agent Yanfei Bao.
They wont say if there's any evidence Ms Bao has been in the silver/grey Mitsubishi sedan.
Registration DPH101.
Earlier this week police revealed the missing person's case had turned into a homicide investigation,but wont say exactly why.
A man is in custody charged with kidnapping and could face further charges.
A house that's for sale on Trevor Street has been the focus of a forensic examination.
Last night Checkpoint revealed an open home still went ahead there after police launched an investigation into Ms Bao's disappearance.
A dive squad been searching water in the Halswell river, with grid searches in suburb of Green Park and an aerial search of lake Ellesmere.
