A man has died in a high-speed crash on a major NSW highway following a police pursuit.
The man, believed to be in his 40s, crashed with a vehicle under pursuit by NSW Police on the Great Western Hwy at St Marys — in Western Sydney — about 4am on Tuesday.
WATCH THE VIDEO ABOVE: Part of Great Western Hwy closed after fatal crash.
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The Holden Insignia sedan being pursued was first sighted while it was stopped on Mamre Rd at St Marys, NSW Police allege.
“Police had stopped near the sedan when the driver allegedly accelerated towards the Great Western Hwy, where police lost sight of the vehicle,” police said.
They followed and found the Holden had crashed into a silver Toyota Corolla hatchback
“The driver of the sedan allegedly fled the scene on foot,” police said.
The driver of the Toyota died at the site of the crash.
A 43-year-old man who was allegedly behind the wheel of the Toyota was arrested by police on Chapel St a short time later.
He was taken to Nepean Hospital under police guard for mandatory testing.
The highway is closed in both directions at St Marys between Glossop St and Sydney St, and a crime scene has been established.
Anyone with relevant information, including dashcam or CCTV footage, is urged to contact police.