Police do not believe missing Christchurch real estate agent Yanfei Bao is alive.
It's a week since the 44-year-old was last seen while door-knocking potential clients in the suburb of Wigram.
Today, police launched a homicide inquiry, calling in a dive squad to search the Halswell River.
Reporter Liu Chen and cameraman Nathan McKinnon are in nearby Greenpark where police are also searching, and filed this story.
