The man who died in a car crash near Urana on Sunday had been charged with firearm offences the night before in Narrandera.
The 21-year-old, from Corowa, had been working in Narrandera.
He was arrested on Saturday night and charged before being released at midnight.
A passing motorist found the man's body inside a Toyota Landcruiser just before 6am on Sunday.
Police say the fatigue was the only factor in the crash which occurred on Federation Way near Spraydons Road.