The teenage son of a Scientologist has been arrested over an attack at the Sydney base of the controversial church where a "beloved" member died after being stabbed in the throat.
"We can not make any further comment beyond the fact that the victim was a beloved member of our church", the church said in a statement.
Police said both victims were church employees. He was being escorted away by two men when he produced a 10-inch kitchen knife and reportedly attacked the pair.
The victim was a 24-year-old Taiwanese staff member who was escorting a 16-year-old boy out after an apparent family dispute.
"The victims were immediately taken to the Royal Hospital and the assailant arrested", the police said.
The Church of Scientology is known to have a policy of "disconnection" that encourages members to distance themselves from friends or family who criticize the cult-like spiritual organization. "Taiwanese male in the neck and he also caused lacerations to an older gentleman also escorting him from the premises", Detective Chief Inspector Simon Jones told reporters.
JUST IN: Police addressed the media after a 16-year-old boy was arrested for the alleged stabbing of two people at the Church of Scientology in Chatswood. The other man, aged about 40, appeared to have superficial injuries.
According to the police, the stabbing took place at 12:30 p.m. local time on Thursday (8:30 p.m. ET on Wednesday) after the teenager was asked to leave the premises.
One man died in hospital, the other is in a stable condition.
The alleged attacker was asked to leave the centre "only and exclusively in relation to a domestic incident" unrelated to the church that occurred on Wednesday.
The Church of Scientology said it was providing the police with any assistance needed in the investigation.
"I came down when the first camera crew showed up but I was told it wasn't a huge deal", he told AAP.
The church on its website says the "Ideal Advanced Organisation in Sydney provides advanced religious services to Scientologists from across Australia, New Zealand and the Asia Pacific region".
Church of Scientology opened its Australasian headquarters - built on the bones of the former National Acoustics Laboratory - in September 2016.