A man has described the moment police shot dead his housemate after he charged at officers with a knife in their home, north of Brisbane.
Officers shot the 33-year-old man in the chest on Monday night after going to a Kippa-Ring home to investigate a series of hoax triple-0 calls.
The dead man's housemate said he saw the whole thing unfold, after he answered a knock on the door and found two police officers asking for his housemate.
'I told them I could go and get him for them and they were like 'yep, that's fine',' the man who identified himself as Adam, told Fairfax Radio.
'So I went and knocked on his door and got him up and he opened the door and I said 'the police are here for you' and something happened then.
'And then I turned around and looked at the police, you know just to see if I have to move away then or anything. I turned back around and he had a knife in his hand, trying to rush them and stuff.'
Adam said he ended up being pepper sprayed when he tried to stop the man lunging at police.
'I've dropped to the ground and he's gone to rush them so they have shot two bullets and actually hit him in the chest,' Adam said.
Earlier, Superintendent Mick Brady said the officers opened fire when the man lunged at them with a knife.
The man died at the scene.
Supt Brady said the officers were in shock.
'This is traumatic for all those involved,' he said.
The police ethical standards command and the Crime and Corruption Commission are investigating.
The police union says video evidence of the incident will be given to investigators.
Union president Ian Leavers said the officers involved had to make a split second decision.
'When it comes to the preservation of life we will do whatever we can.
'Because my view is every police officer is entitled to go home at the end of their shift to their families.
'Police will always show great restraint and we use the least amount of force as possible.
'But it is a difficult and dangerous job and we have to make instantaneous decisions.'