Police are investigating after a man was stabbed in Adelaide this afternoon.

Just after 2.30pm, officers arrived at a unit on Jean Street in Pooraka, where they found a man who had stab wounds to his leg.

The man, aged in his 30s, was unconscious when paramedics arrived and was taken to Royal Adelaide Hospital in a critical condition.  

A woman at the location was interviewed by detectives in the back of a police car before being driven away by officers.

Investigators do not believe this was a random attack.

A crime scene was established and there was a heavy police presence as the street remained cordoned off into the evening.

The man has since undergone emergency surgery.

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