The potential movements of Yanfei Bao's alleged killer have been dissected in the High Court at Christchurch today

Chinese national Tingjun Cao is charged with her murder - after she disappeared on July 19th last year.

The jury heard from multiple people who saw a car - which they say fit the description of Cao's - acting suspiciously around the 19th.

One sighting was near where Bao's damaged phone was found, the other close to where she was buried.

The latest witness says she saw a man cleaning the front of his car in the Greenpark area with a bottle of water, and thought it seemed unusual.