A man has been seriously injured following a single-vehicle crash in Casula on Saturday morning.
About 2.50am, emergency services were called to the M5 near the Camden Valley Way exit after reports of a crash.
Police were told a BMW sedan was travelling along a westbound lane when it struck a concrete barrier.
The male driver, believed to be aged in his 30s, sustained internal injuries.
He was treated at the scene by Ambulance Officers before being taken to Liverpool Hospital in a serious condition.
Investigations have commenced to determine the cause of the crash and officers from Liverpool Local Area Command have established a crime scene.
Anyone with information about this incident should call Crime Stoppers on 1800 333 000.