Three security guards were stabbed in the Bondi Junction attack, it has emerged, including one who was killed trying to stop the attacker.

The only man who has so far died after the attacks, Faraz Tahir, 30, is thought to have been on his first day in the security job.

A second guard, who is yet to be identified, was also killed in the attacks while the third, Taha Umar, is in a stable condition in hospital.

READ MORE: Five out of six victims named after Bondi Junction attack

Three people, including a nine-month-old baby girl, remain in critical condition in hospital.

Knife-wielding Joel Cauchi, 40, carried out the mass attack at the Westfield shopping centre yesterday afternoon.

Six people, five women and one man, were killed.

A dozen more – 10 women and two men – were injured and rushed to hospitals around the city.

NSW Health has confirmed eight of the other patients are stable, including three women and one man.

Zac Wineberg's wife has been discharged from Prince of Wales Hospital.

She "didn't know" she had been stabbed in the back, Wineberg said.

There are three women in stable condition at St Vincent's Hospital.

A man is also there in critical but stable condition.

Another woman is critical and a man is stable at Royal Prince Alfred Hospital.

The nine-month-old baby girl, who underwent surgery, is in critical but stable condition in intensive care at Sydney Children's Hospital.

One woman at Royal North Shore Hospital is in serious but stable condition.

TIMELINE: How the Bondi Junction Westfield stabbing attack unfolded

Three further women, two at Prince of Wales Hospital and one at St George Hospital, are all stable.

NSW Health extended its "deepest sympathies" to the families, friends and loved ones of those who died and were injured.

NSW Police Commissioner Karen Webb said while the motive for the stabbing spree is unknown, police are investigating whether Cauchi had targeted women.

The 40-year-old was known to police due to his long history of mental health issues. 

What we know so far

• Six people have been killed in a mass stabbing attack at Westfield shopping centre at Bondi Junction in Sydney's eastern suburbs.
• The man, 40-year-old Joel Cauchi, was shot dead by NSW Police Inspector Amy Scott at the scene. Police do not believe he acted "with ideation".
• Twelve people were taken to hospital, though police said others may have presented independently with minor injuries.
• Five women and one man were killed in the attack, which also left a dozen injured.
• They include Faraz Tahir, 30, a refugee who started working as a security guard that day; Ashlee Good, 38, a mum whose baby was also stabbed; Dawn Singleton 25, a shop worker and daughter of businessman John Singleton, and architect and mother-of-two Jade Young, 47, and Pikria Darchia, 55.
• Three people – a woman, man and a nine-month-old baby girl – remain in a critical condition.
• Eight others are stable and one woman has been discharged from hospital.
• Details are emerging of heroic acts by shoppers who tried to help as the rampage unfolded.
• Mobile phone footage shows crowds hiding in stairwells, with other shoppers saying they were evacuated to the roof and others cowered in shops.
• The shopping centre will remain closed on Monday as police work through the crime scene.