Police are investigating a serious crash at Delamere early this morning.

About 12.45am on Sunday 30 June, emergency services were called to Bullaparinga Crescent at Delamere after reports a Holden VT sedan left the road and crashed into a tree.

The driver, a 19-year-old from South Brighton, sustained serious injuries and was airlifted to Adelaide for treatment.

The three passengers, a 19-year-old from Yankalilla, a 17-year-old and 15-year-old both from Delamere were taken by SAAS to hospital.

Hills Fleurieu police attended to investigate the circumstances surrounding the crash.

Anyone with information on the crash is asked to contact Police.

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