A man is in hospital under police guard after he allegedly fled the scene of a car accident which killed his passenger.
Emergency crews were called to Vulcan Street in Cooma, in southern NSW, just before midnight on Saturday after reports a car had left the road and hit a tree.
An man in his 20s was found in the front passenger seat and was assessed by paramedics but died at the scene, NSW Police said on Sunday.
A crime scene was established and forensically examined by officers attached to the Crash Investigation Unit.
Police were told the driver was seen running from the single-car crash.
A 23 year-old man who presented with injuries at Canberra Hospital was later arrested, and remains in a stable condition under police guard.
Officers are appealing for any witnesses to contact them with any information as they investigate the cause of the crash.
A report will be prepared for the coroner.
