Fuel tanker rolls over on Adelaide highway

A fuel tanker has rolled over on a major highway north of Adelaide.

Firefighters are on the scene at Port Wakefield Road in Wild Horse Plains, about 70km north of Adelaide, where an unconfirmed quantity of fuel has been spilled.

There were no injuries, and no ignition sources have been identified.

Port Wakefield Road has been closed in both directions while crews clean up the fuel.