A man has died after a crash involving three cars and a truck on the NSW South Coast this morning.

At about 6:15am today, Monday 13 July, emergency services were called to the Princes Highway, just south of Cobargo, near Quinlans Road, following reports of a crash.

On arrival, officers attached to South Coast Police District found that three cars and a truck had collided.

The male driver of one of the vehicles died at the scene.

He is yet to be formally identified.

The male truck driver was treated for a possible punctured lung and the two other drivers were physically uninjured.

All three drivers were taken to Southeast Regional Hospital for mandatory testing.

Police have commenced an investigation into the cause of the crash.

Anyone with dashcam footage or information is urged to contact Bega Police or Crime Stoppers on 1800 333 000.

The Princes Highway, just south of Cobargo is closed in both directions. Local diversions are in place and up-to-date information can be found on www.livetraffic.com

A report will be prepared for the information of the Coroner.