A knife-wielding man shot dead by police at a Brisbane property was a notorious ex-bikie with a history of violence.
Police were called after Liam Scorcese, 31, was spotted with a knife outside his ex-partner's Wakerley home about 10am.
As the two officers approached the front door, Scorsese reportedly ran at them with the knife.
A Taser was deployed without effect before Scorcese was shot twice in the neck by officers.
He was taken to the Princess Alexandra Hospital in a critical condition but never regained consciousness.
Detective Chief Superintendent Mick Niland said "police were in fear of their lives" when Scorcese was shot.
"Police were called to a Goulburn Street address where a male person was armed with a knife, was trying to break into a dwelling house at his address," he said.
"They have utilised a Taser, the Taser was utilised but without effect. They then retreated some 50-60 metres down the road, and at that time one officer has fired his weapon twice.
"As a result, the male person died."
Scorsese was a former Comancheros member and standover man.
He had been in and out of jail in recent years and attacked a Gold Coast bus driver in August 2016.
A court was told Scorsese was deeply remorseful and ashamed of his actions, but four months later he attacked police and paramedics in an ambulance after a traffic accident in Broadbeach Waters.
The Queensland Police Service's Ethical Standards Command has launched an investigation into the incident, with the assistance of the Crime and Corruption Commission.
The two officers involved are being questioned and their body-worn cameras have been seized as part of the investigation.
It is the second shooting incident involving Queensland police in less than two weeks, after a 16-year-old boy was shot after allegedly lunging at officers with a knife at Springfield, southwest of Brisbane on February 14.