Police officers have shot a man who allegedly lunged at them with a knife outside Campbelltown train station this afternoon.
Police, who were responding to a reports of someone carrying a knife, spoke to a man on Hurley Street just before 2.45pm on Wednesday, May 15 when an altercation occurred.
NSW Police Assistant Commissioner Peter Thurtell said four uniformed officers approached the man at the train station turnstiles, where he produced a knife "about 30 centimetres long".
The man allegedly challenged police with the knife, and officers used a Taser in an effort to contain him. However, Assistant Commissioner Thurtell said the Taser was "ineffective".
He was then shot in his stomach area after "aggressively confronting police", Assistant Commissioner Thurtell.
Paramedics were called to the site and treated a man, aged in his 30s, for a gunshot wound.
He was transferred to Liverpool Hospital under police guard. His is reportedly in a serious but stable condition.
A crime scene was established outside the station. Officers encourage people to avoid the area this afternoon while the scene is examined.
Police have launched a critical incident investigation into the shooting.
The matter is being investigated by the homicide squad oversighted by professional standards command, Assistant Commissioner Thurtell said.
"The facts are yet to be determined, that's why the homicide squad has been brought in."
He said the majority of the incident was captured on CCTV.
The officers involved in the incident are all being looked after, the Assistant Commissioner said.
"It is concerning that anybody would carry a knife in public. Policing is a dangerous job, we all know that, but the police responded to the incident," he said.
"We are looking after the police welfare. The police are fine and we are doing everything to make sure they stay that way."
A Transport Management Centre spokesman said trains were running as normal on the T8 Airport and South Line.
"Buses are operating as normal, except the bus stop location has been moved slightly further away from the normal site," he said.
"Staff are there to direct customers."
- with Lucy Cormack and Jenny Noyes