A disgraced high-profile dentist allegedly attacked two women while armed with a knife inside a Sydney apartment complex before being shot dead by police.

Steven Lin died after being shot during a tense stand-off with police officers in Potts Point on Tuesday morning.

Police allege Dr Lin entered the building on St Neot Avenue armed with a knife before allegedly assaulting one woman in the laundry room and another inside her unit.

Witness Rohan Bodman, who lives next door, said he heard a muffled women’s voice plea for “help” multiple times before officers yelled out “drop the knife”.

Police and a white sheet outdoors

A critical incident was declared after Dr Lin was shot by police at Potts Point. (ABC News: Ethan Rix)

Both women suffered serious injuries to their face and head and were taken to St Vincent’s Hospital in a stable condition.

Police said two officers arrived at the scene a short time later and were confronted by the 41-year-old when they deployed a taser, which was not effective.

The dentist then allegedly threatened police while armed with the knife before he was shot once and later died at the scene.

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Police said Dr Lin did not know the two women who he allegedly attacked.

Dr Lin, who has six children, was the founder and former CEO of Central Coast-based dentistry clinic Helix Group and authored several books.

His family told the ABC he became a frequent user of methamphetamine after he split from his wife in 2024 before ceasing all affiliation with Helix Group the same year.

Steven Lin smiles with lab coat and blue shirt

Dr Lin did not know the two women he allegedly attacked, police say. (Supplied: Facebook)

Dr Lin had been facing several domestic violence-related charges, including assault occasioning bodily harm, breaching an apprehended violence order (AVO), stalking or intimidating intending fear and choking.

Man shot dead by police after assaulting two women

Police were called to a unit in inner Sydney after an armed man entered the building and assaulted two women.

He was due to face court in March over two offences of breaching the conditions of an AVO.

A critical incident investigation has been established to investigate the actions of the responding officers who shot and killed Dr Lin.

NSW Police Assistant Commissioner Peter McKenna on Tuesday said his officers were confronted with a “very violent” situation and that those involved were traumatised by the incident.

One of the women has been discharged from hospital while the other remains in a stable condition.