He was reportedly shot dead near the Kruger National Park last month.
Naude owned Pro-Hunt Africa and regularly hosted trophy hunting exhibitions.
His body was found just outside a farm on the R518 near Mokopane. He was believed to have been on his way to a hunt when he was accosted and killed.
Police say Naude was found lying on his back next to his vehicle. His firearms were stolen. They were alerted to his body by a local who reported hearing gunshots and then seeing a vehicle speeding away from the scene.
Anyone with information that can assist in the investigation is urged to call Mahwelereng detective commander Captain Mallela on 071 678 3305.