Serious Crash - Horrocks Highway at Templers

Motorists north of Adelaide are advised police and emergency services crews are at the scene of a two car crash on the Horrocks Highway just north of Templers.

Just after 6.30am two cars collided head-on about 3kms north of Templers near the intersection of the Horrocks Highway and Neldner Road.

The Horrocks Highway has been closed to all traffic while injured parties are being treated at the scene.

UPDATE: Two men and a boy have been airlifted to hospital with serious injuries following a head-on crash north of Adelaide.

Just after 6.30am a Toyota 4wd travelling north on the Horrocks Highway collided with a Toyota sedan travelling south, about 3kms north of Templers.

The driver of the sedan, a 38 year-old man from Clare was trapped in the car for more than an hour, before he was cut free by emergency services crews.

A 7-year-old boy who was passenger in the rear of the sedan was also seriously injured.

The driver of the Toyota 4WD, a 49-year-old man was the only occupant in the vehicle.

All persons were airlifted to Adelaide with multiple injuries.

Major Crash Investigators are at the scene examining the circumstances surrounding the crash.

The Horrocks Highway is open to traffic with police conducting traffic control around the crash site.