A child has died following a single-vehicle crash south of Wagga Wagga in the state's southwest.
Emergency services attended Holbrook Road at Mangoplah, following reports of a single-vehicle crash just after midday yesterday.
A Mitsubishi Triton travelling northbound on Holbrook Road appears to have left the road and hit a tree.
The driver, a 28-year-old man, was treated at the scene for non-life-threatening injuries and taken to Wagga Wagga Base Hospital.
A six-year-old boy, a passenger, died at the scene.
A crime scene was established and the Southern Region Crash Investigation Unit is investigating.
Police are also investigating after a fatal crash near the NSW/ACT border.
Emergency services responded to reports of a single-vehicle crash near Queanbeyan yesterday just after 6 pm.
The male driver of a black Renault Magane was ejected from the vehicle.
He was taken to Canberra Hospital in critical condition but died a short time later.
The man is yet to be formally identified but is believed to be aged 25.
Police are urging anyone who saw the vehicle prior to the crash, or who may have dashcam footage from the area, to call Crime Stoppers on 1800 333 000.
A report will be prepared for the Coroner.
Images: NSW Police & NSW Ambulance