A pedestrian has been hit and killed by a car on the Stuart Highway in South Australia’s outback, just south of the Northern Territory border.

The death of the 26-year-old was not the only fatal incident on South Australia’s roads yesterday, with a 72-year-old also losing his life in a crash south of Adelaide.

In the Stuart Highway incident, emergency services from both sides of the border were called to De Rose Hill about 1:45pm on Tuesday.

The victim was a 26-year-old man from Port Augusta who died at the scene about 30 kilometres south of the NT.

Police from both jurisdictions, as well as the Country Fire Service and the South Australian Ambulance Service all responded.

Major Crash investigators flew to the scene, and the Stuart Highway has since reopened after remaining closed in both directions for most of the night. 

Police said the driver of the car, a 71-year-old Victorian man, was not injured.

About half an hour before that crash, a man was killed at Milang, south of Adelaide, when his car left the road and crashed into a power pole.

Emergency services rushed to the crash site on Tee Road just after 1:15pm on Tuesday.

“The driver and sole occupant, a 72-year-old local man, sadly died at the scene,” police said.

Police have also confirmed that a 91-year-old Tintinara man who was injured in a two-car crash in the state’s south-east on April 10 died in hospital on Monday.

“Major Crash investigators are investigating the circumstances that led to the fatal collision,” police said.