One Dead After Stabbing At Church Of Scientology

One man is dead and a teenager is in custody after a "traumatic" stabbing at a Church of Scientology centre in Sydney's north, which left another man wounded in hospital.

Police said a 16-year-old boy was arrested on Thursday afternoon, following an alleged stabbing at a religious centre on Greville Street, Chatswood.

Police said the weapon used was a 25 centimetre-long kitchen knife. Officers alleged the incident had occurred when the teenager was "being escorted out, being walked out, and for some reason something has happened".

A person in handcuffs being led away by police

Two men were injured, with one left to be in critical condition. Both were taken to Royal North Shore Hospital,  but police later advised one victim -- a man in his 20s -- had died.

The other victim was said to have "superficial" injuries.

Police remove bags of evidence from the location (10 News First)

Police claimed the alleged stabbing may be linked to a "domestic incident", and that while the alleged perpetrator did not live at the Scientology centre, he may have a family member who did.

The incident occurred on the driveway of the facility, just inside the centre's gates.

A spokesperson for the church told 10 News First "The matter is in the hands of the police and we cannot make any comment."

NSW Ambulance acting deputy commissioner Tony Gately said paramedic crews had rushed to the scene.

“Our crews are responding urgently to the patient. It appears to be a traumatic injury and our paramedics will do everything they can to assist this man,” he said in a statement earlier on Thursday.

Police tape at the gate, near where the stabbing occurred

The Church of Scientology's centre at Chatswood is known as the Advanced Organisation Saint Hill Australia New Zealand Oceania -- the organisation's headquarters for the Australasian region.

It opened in 2016, and was described by the organisation as its "stunning new spiritual home". The church described the building as an "architectural masterpiece" and a "beacon of freedom for the Asia Pacific region", and is said to be the organisation's "largest spiritual center outside the United States".

More to come.