Image: Channel 7

A man has been shot by police officers at a train station in Sydney’s south-west.

The incident took place at Campbelltown Station just before 2:45pm.

It’s believed the man, aged in his 30s or 40s, was speaking to officers from the Police Transport Command when he pulled out a knife.

Ben Fordham has revealed officers tried to taser the man after he allegedly threatened them with the weapon.

A source has told him an officer shot the man once in the stomach, with reports suggesting he lunged at them.

The man has been taken to Liverpool Hospital in a critical condition.

The Police Association say they are aware of a critical incident and their representatives are on the scene.

Click PLAY below to hear Ben Fordham’s update on the situation

Emma rang in to tell Ben the whole area has been cordoned off and school kids have been left stranded.

Click PLAY below to hear the full interview