A man has been arrested after a police pursuit ended in a head-on collision in Sydney's south-west.
Police tried to stop a stolen Holden Captiva on Badgally Road, Claymore, about 1.15pm today.
The driver failed to stop and police started a pursuit, which was stopped shortly after due to safety concerns.
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The Holden collided head-on with a Nissan Pathfinder on Gregory Hills Road, Gregory Hills, a short time later.
Police arrested the 20-year-old driver of the stolen Holden.
Both the driver and the driver of the Nissan, a woman in her 40s, were treated at the scene by paramedics.
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The 20-year-old was taken to Liverpool Hospital under police guard in a stable condition.
The woman was taken to Campbelltown Hospital also in a stable condition.
Investigations into the incident are continuing.