Police advise that the victim of an apparent hit-and-run in Christchurch early on Thursday 5 July passed away overnight.
He was Steffan Pearce-Loe, aged 30, of Christchurch.
Detective Senior Sergeant Greg Cottam said police are continuing to examine CCTV footage in the area, and are examining and working to identify broken car parts left at the scene.
"There may be a number of reasons for the driver not coming forward but we urge them to do so, so Mr Pearce-Loe's family can have some answers.
"We would again ask anyone who saw the victim walking two dogs in the Dallington area around midnight, or who knows how he sustained his critical injuries, to please get in touch with us."
Anyone with information is asked to contact Acting Detective Sergeant Ben Rolton of Christchurch Police on 03 363 7400, or Crimestoppers anonymously on 0800 555 111.
ENDS
Issued by Police Media Centre