Police are appealing to truck drivers for help with investigations into the death of Peter Liu in Napier on Monday.
The 63-year-old died after being assaulted by two people in the suburb of Pandora.
Police want information from truck drivers and people with dashboard cameras who were in Pandora and Onekawa between 12.30pm and 2pm on Monday.
Detectives are looking for sightings of a maroon Holden Commodore, which was located the following day.