Sydney's powerful tribute to the victims of the Westfield Bondi Junction massacre

The Sydney Opera House was lit up with a solemn black ribbon to reflect the country's heartbreak following Saturday's Bondi massacre.

The knife rampage at Westfield Bondi Junction in Sydney's eastern suburbs left six innocent people dead and more in hospital.

As night fell on Monday, the Sydney Opera House transformed with a black ribbon projected onto its legendary curved white sails.

Earlier in the day, flags were flown at half-mast in honour of the victims.

A black ribbon was projected onto the Sydney Opera House on Monday night, two days after six people were killed during the deadly Bondi Junction massacre (pictured)

A black ribbon was projected onto the Sydney Opera House on Monday night, two days after six people were killed during the deadly Bondi Junction massacre (pictured)

The black ribbon is a symbol of remembrance or mourning and is displayed as a public symbol of consolation

The black ribbon is a symbol of remembrance or mourning and is displayed as a public symbol of consolation

On Sunday, Prime Minister Anthony Albanese announced all Australian government buildings, including at Parliament House in Canberra would lower their flags as a mark of 'mourning and respect'.

Detectives are still working to piece together evidence regarding the horrific stabbing rampage at a shopping centre in Sydney's east that left seven dead, including assailant Joel Cauchi.

The victims have been identified as Yixuan Cheng, Pikria Darchia, Dawn Singleton, Faraz Tahir, Jade Young and Ashlee Good.

Eight injured victims remain in hospital with stab wounds, including one in a critical condition, and two in a serious but stable condition. 

The remaining five, including a nine-month old infant, are in a stable condition.

Cauchi was shot dead by lone police officer, Inspector Amy Scott, who was the first on the scene.

The 40-year-old man has battled with mental health issues, including schizophrenia, since he was a teenager.

Anthony Albanese (pictured laying flowers at the shopping centre) announced all government building would lower their flags to half mask as a mark of 'mourning and respect'

Anthony Albanese (pictured laying flowers at the shopping centre) announced all government building would lower their flags to half mask as a mark of 'mourning and respect'