A teenager has been killed and his older brother has been charged with unlicensed and unregistered driving after a crash near Wagga Wagga, in southern New South Wales.

Officers said a 19-year-old was behind the wheel of a car that rolled at The Rock about 2:00pm on Sunday.

His 13-year-old brother died at the scene.

The driver was treated for minor injuries and taken to hospital for mandatory blood and urine tests, police said.

Local Superintendent Bob Noble said the driver had been charged with negligent driving cause death, aggravated burnout, driving unlicensed, driving unregistered and driving uninsured.

"Unfortunately the 13-year-old boy was ejected from the vehicle in the course of that collision and died pretty much straight away from obviously very serious injuries," he said.

"Tragically, the 19-year-old man is the brother of the deceased boy, so I'm sure that only compounds in so many ways the grief being experienced by that family.

Children left sympathy messages for the family at the local skate park. ( ABC News: Melinda Hayter )

"I'm sure we all feel for them, irrespective of the circumstances. It's a terrible situation.

"There's a clear message that obviously speed and driving experience and all these things can work against young drivers and in some circumstances they can conspire to cause the most serious injuries and that's what we've seen on this occasion.

"Really people need to observe the driving laws and they need to exercise discretion and caution and act sensibly when behind the wheel."

The boys' sister said she last saw her brothers before they left for the drive.

"The last thing I said to my brothers was 'be careful'," she said.

"They were just doing what brothers do."

She said her younger brother would be deeply missed and the family would support her elder brother.

"[He] was a beautiful kid, with a heart of gold. He'd do anything for anyone, and we love him deeply," she said.

"He was popular, well liked, and from a very tight-knit family.

"We'll standby my [older] brother as a family. We'll all stick together."

The 19-year-old man applied for bail in Wagga Wagga Local Court, but it was refused.

The matter was adjourned until June 6.

Superintendent Noble said anyone with information about the fatal crash should come forward.

"If there's any other person in possession of information or evidence they really should bring it to us, or report it via Crime Stoppers because we really must be comprehensive in our examination of the matter."