Two people are dead after a man opened fire on a motorway in the US state of Oklahoma.
The suspected gunman surrendered after being pursued by police across several counties.
Police say he'd fired randomly from his pickup truck, first killing a man near Oklahoma City.
About 15 kilometres away, he killed a woman as she was driving.
Authorities say he'd fired so many shots, it's not likely he knew the victims.
RadioLIVE