The victim, a 53-year-old male, was taken to Duke University Hospital for treatment of critical injuries.
Detectives have learned that approximately four black males appearing to be between 16-20 years of age assaulted and attempted to rob the victim while he was walking through the park.
No charges have been filed at this time.
Anyone with information is asked to call police at (919) 560-4281, ext. 29124 or Crime Stoppers at (919) 683-1200.