Man dies after being trapped under bus in west Sydney crash

Police have confirmed a man in his 20s has died following a serious crash in Sydney’s west where he became trapped under a bus.

A man has died after becoming trapped under a bus following a serious crash in Sydney.

Emergency services were called to the scene of Warren Rd and the Liverpool-Parramatta TransitWay near Smithfield about 11.30am on Friday.

Police have confirmed a man has died in a serious crash in Sydney's west.

It followed reports of a serious crash involving a bus and a car along the road.

The driver of the smaller vehicle - a man in his 20s - was trapped and pronounced dead at the scene.

The bus driver, a 58-year-old woman, was uninjured.

A NSW Police spokesman said she had been taken to Westmead Hospital for mandatory testing.

A crime scene has been established and examined by specialist officers attached to the Metropolitan Crash Investigations Unit.

An investigation has commenced into the circumstance surrounding the crash and a report will be prepared for the Coroner.