Stabbing death in Sydney's west

A man has died after being stabbed in the neck in Sydney's west.

Police were called to a street in Greenfield Park just before 3pm on Tuesday following reports of a stabbing but found no one injured.

A short time later a 21-year-old man turned up at Fairfield Hospital with a stab wound to his neck.

He underwent emergency surgery but died about 4.45pm.

Police patrolling in Greenfield Park arrested two men, aged 24 and 39, who were later released pending further inquiries.