The man who died after being found unconscious on the road in Tinirau St, Whanganui East, was Daniel John Gooch of Whanganui.
Whanganui Police launched a homicide inquiry after 56-year-old Gooch died on May 9.
He was found with unexplained injuries on Tinirau St on April 20 and taken to Wellington Hospital in a critical condition. He was later transferred to Taranaki Hospital.
Police are continuing to investigate what happened and would still like to hear from anyone who saw or heard anything out of the ordinary in the Tinirau St area in the early hours of Friday, April 20.
Anyone with information is urged to contact Whanganui Police on (06) 349 0600 or Crimestoppers anonymously on 0800 555 111.