The family of a man shot dead by police on Sydney's lower north shore on Thursday have described him as a "sweet soul" who had never been violent in the past.
As the family struggles to comprehend what prompted Steven Pampalian's erratic behaviour, they have questioned why the officers body-worn cameras were not switched on.
Emergency services were called to Alexander Avenue, North Willoughby, just before 11:30am, after receiving multiple calls the 41-year-old was threatening residents.
When officers arrived, police say he ran at them with two large knives before being shot dead.
The victim's brother Eddie Pampalian told ABC the behaviour was "completely out of character".
"He was an amazing sweet soul, anyone that's met him can and will confirm it," Mr Pampalian said.
"The most caring uncle, brother, son, cousin and friend. He was quite shy but an amazing, caring person.
"We're still trying to piece together and understand what happened yesterday."
NSW Police have launched a critical incident investigation involving the State Crime Command's Homicide Squad.
Assistant Commissioner Leanne McCusker addressed the media following the incident saying Steve was "behaving aggressively … approaching neighbours and approaching various homes".
When asked if the police response had been appropriate, she offered support to the officers involved.
"With the information that is before me at this stage, and noting the speed at which I understand the person approached police, yes I am," Assistant Commissioner McCusker said.
"Police were there, as we are, to protect the community."
The family have apologised to the community they have been "a part of for the last 50 years."
"We are truly sorry to anyone that may have felt threatened or scared by the events that took place yesterday."
Mr Pampalian said police have told the family the body-worn cameras did not capture the incident because they were not switched on.
He said the family wanted answers about why the officer resorted to using their gun.
"I feel there are many other ways they could've handled this … but so far it doesn't make a lot of sense."
He said Steve was battling anxiety and depression, but had no criminal history.
"I feel it is important not just to set the record straight. He's [Steve] never had an outburst like this. He's the opposite of this."
