A crash near Leeton early on Friday morning claimed the life of a 63-year-old man.
Police were still at the scene as of 2.30 on Friday afternoon.
At just before 8.30am on Friday, November 10, emergency services were called to the intersection of Garner and Whitton Roads at Leeton, after reports of a crash.
Police state initial inquiries suggest a Ford Fiesta and a Kawasaki Mule have collided.
They say the Mule overturned, ejecting the driver, a 63-year-old man.
Police say the 48-year-old woman, who was allegedly driving the Ford, proceeded to give the man first aid until the arrival of officers from Griffith Local Area Command.
NSW Ambulance paramedics attended, however the man passed away.
The woman was taken to Leeton Hospital for mandatory testing.
A crime scene was established with inquiries continuing.
Police are urging anyone with information in relation to the incident to call Crime Stoppers on 1800 333 000 or use the Crime Stoppers online reporting page.
Residents were urged to avoid travelling on Whitton Road between Henry Lawson Drive and Kirkup Road after a serious accident on Friday morning.
Residents were asked to use Irrigation Way when travelling to and from Whitton to allow emergency services to undertake the necessary action.