Fifty-two-year-old Wayne Preston Cross passed away Wednesday evening at Durham Regional Hospital.
Police said the Cross was attacked in Long Meadow Park in the 900 block of Holloway Street around midnight July 24.
When officers arrived, Cross told them he was robbed and assaulted by a group of teens.
There have been no arrests.
Anyone with information is asked to call Investigator Pate at (919) 560-4440, ext. 29332 or CrimeStoppers at (919) 683-1200. CrimeStoppers pays cash rewards for information leading to arrests in felony cases and callers never have to identify themselves.