Six people have been killed, including two police officers, during a siege in rural Queensland and Prime Minister Anthony Albanese has offered his condolences from Kirribilli House.
Look back on the day's developments below.
Key events
Live updates
That's where we will end today's blog
By Tom Williams
Here's the latest wrap of what occurred overnight, if you're just tuning in:
- Two brothers Nathaniel Train and Gareth (Gavin) Train were shot dead by police during a siege at a property in Queensland's Western Downs
- The brothers are the offenders who police say shot and killed two armed officers and neighbour Alan Dare last night at a property in Wieambilla, west of Brisbane
- Stacey Train, 45, was also killed at the scene
- Four Queensland police officers had travelled to the property as part of a search for Nathaniel Train, who was subject to a missing persons report
- Queensland's police commissioner says it could take days — if not weeks — to process the scene of the deadly shooting
Story Bridge, Victoria Bridge to light up in blue and white
By Jessica Riga
Brisbane landmarks including the Story Bridge and Victoria Bridge will be lit up in blue and white tonight out of respect for Constable Rachel McCrow and Constable Matthew Arnold.
Police officer's mother remembers her 'beautiful boy'
By Jessica Riga
A candlelit vigil has been organised for both of the constables killed in Wieambilla. It will take place at the Calamvale police station in Brisbane's south from 6pm tonight, with Constable Matt Arnold's mum Sue among those expected to attend.
Speaking on social media, Sue Arnold said her son was about to return home for Christmas.
"Matt Arnold was our beautiful boy who was due home tomorrow on break to stay with us until Christmas," she said.
"Words cannot express our devastation."
More thoughts and reflections from you
By Jessica Riga
Unbelievable and so tragic. 😢🙏 — Janice Tebbutt
With police in my family and found family, I am shocked and horrified at this turn of events. My prayers are with those who choose to put themselves in harm's way every day to protect the rest of us. — Katie
Having two daughters and a son in law in the police force I can not even think how I would feel if this happened to one of them. I feel for all connected to this horrible thing. — John
Woman who died at scene of shooting identified as Stacey Train
By Jessica Riga
Two brothers Nathaniel Train and Gareth (Gavin) Train were shot dead by police during a siege at a property in Queensland's Western Downs overnight.
The brothers are the offenders who police say shot and killed two armed officers and neighbour Alan Dare last night at a property in Wieambilla, west of Brisbane.
Stacey Train, 45, was also killed at the scene.
Four Queensland police officers went to the property as part of a search for Nathaniel Train who was subject to a missing persons report.
The Wains Road property, where the shooting happened, is listed as being owned by Gareth and Stacey Train.
More thoughts and reflections from you
By Jessica Riga
Genuinely devastating news for the community, rest easy to those officers. — Josh
I was shocked to hear of such a tragedy. My deepest sympathy to the families and their police family for the loss of two brave Queensland police officers. I also send my sympathies for the loss of a brave man that stepped in to help. I have a great respect for our police as they take on more than we will ever experience or imagine. Thankyou to all. — Eileen Bachiller
PM: 'Courage and public service at the highest level'
By Jessica Riga
Here's Prime Minister Anthony Albanese's statement in full.
All Australians are shocked and saddened by this tragic loss of life. Two Queensland police officers, their lives cut short by this atrocity.
Constable Matthew Arnold, just 26 years of age, Constable Rachel McCrow, just 29. Constables from Tara Police Station, who lost their lives in this tragedy.
I pay tribute to them. I pay tribute as well to their surviving fellow officers, Constable Randall Kirk and Constable Keely Brough.
In addition I pay tribute to a neighbour driven by the instinct to help. Alan Dare also lost his life in this tragedy. Three lives cruelly cut short.
This is, indeed, a devastating day for everyone who loved these Australians. And our hearts go out to those in the grip of terrible grief. We know that this news has fallen hard on a close-knit and caring Queensland community. As well as, of course, the community to which all police officers belong.
Today is a rough day indeed for all police officers and their families. Every officer knows the risk that they face in the life of duty. They are all too aware of the dangers that they face. Yet they do their job. They do it for our communities.
That is courage and it is public service at the highest level, and today and every day I pay tribute to each and every one of the police officers who serve their local communities and who serve their nation.
This is not a price that anyone who puts on the uniform should ever pay. We can never count the true cost.
My heart goes out to the families and loved ones of all those affected by this tragedy. With honour, they served, and Australia mourns with you today. We stand with you always.
PM: 'All Australians are shocked and saddened by this tragic loss of life'
By Jessica Riga
Prime Minister Anthony Albanese has paid tribute to the two Queensland Police officers whose lives were "cut short by this atrocity."
We're hearing from the PM
By Jessica Riga
Prime Minister Anthony Albanese is giving a statement about the Queensland Police shooting.
You can watch his statement in full in the video below.
SA Police Association president urges police not to 'bottle up emotions' at this time
By Tom Williams
The Police Association of South Australia has decribed last night's siege as a "tragic loss of police life".
"A dark cloud hangs over the entire Australian police community today," the association said.
Its President, Mark Carroll, said the alleged killers had a clear disregard for the lives of the police officers and civilian who were killed.
"Words are pretty much useless right now. They don't come close to easing the pain of the families, friends and colleagues of the lost," he said.
"We can and should proclaim our genuine sorrow. But the best that we can do now, as a union and as individuals, is give those families and friends the greatest support possible."
Carroll said it was important for police officers to talk to each other and to their families, including their children.
"This is not a time to withdraw or bottle up emotions," he said.
"Talking does help, and children need clear explanations and reassurance."
Photos from edge of exclusion zone
By Jessica Riga
Photos taken from the edge of the exclusion zone have given more insight into the property, which police described as "isolated".
Queensland Police made the Public Safety Preservation Act declaration shortly after 6pm last night.
It was finally revoked 15 hours later.
VIDEO: Feeling of 'shock and numbness', says Nationals leader David Littleproud
By Tom Williams
Nationals leader and the member for Maranoa, David Littleproud, says there will be a lot of healing and support within the community, following the tragic events in Wieambilla.
Where is Wieambilla?
By Jessica Riga
A six-hour siege west of Brisbane on Monday ended with two police officers, a member of the public and three offenders dead.
The shooting took place at Wieambilla house on Wains Road in Queensland's Western Downs, which is about 3.5 hours inland from Brisbane.
Tributes from police organisations around Australia
By Tom Williams
Other police and emergency organisations have shared tributes online to the police officers killed in yesterday's siege.
Here are just a few of them:
Flags fly at half-mast
By Brianna Morris-Grant
The flags outside police stations across the country will fly at half-mast today after the deaths of two officers and a civilian.
Photos from Maroochydore Police Station, around five hours away from the scene of the attack, show the flag lowered.
Outside Chinchilla Police Station, close to the scene, members of the community have been leaving floral tributes since this morning.
School community reeling after officer's death
By Brianna Morris-Grant
The former high school of Constable Matthew Arnold has paid tribute to his "integrity and compassion" in a statement.
St Laurence's College principal Chris Leadbetter made an announcement "with great sadness" informing the school community of his death this morning.
"Our thoughts and prayers go out to the Arnold and Parker families, including his brother James Arnold who was also a senior from the Class of 2013," he wrote.
"Matthew remained involved in the life of our College.
"He was a sport coach, attended retreats and school camps and participated in the Woody Cup.
"He was also Sportman of the Year in 2013.
"At this difficult time, I ask that we are mindful of the privacy of the Arnold and Parker families.
"Matthew is remembered as a man of service, integrity and compassion. May he rest in peace."
Some of your thoughts and reflections
By Tom Williams
Such a senseless act. Devastating loss of young life. Heartbreaking.
- Natty
Thank you to all those brave people serving their communities everyday. Our hearts go out to all your families and friends 💙💙💙
- Maggie O’Donovan
My heartfelt sympathy goes to family colleagues and friends for this terrible tragedy. The general public have no idea what Police Officers have to deal with every day R.I.P.
- Barbara O'Brien
'With Honour They Served'
By Brianna Morris-Grant
Queensland Police have shared photos of Constables Matthew Arnold and Rachel McCrow.
Brothers Nathaniel and Gareth Train identified as alleged gunmen
By Tom Williams
Brothers Nathaniel Train and Gareth (Gavin) Train have been identified as being shot dead by police during the siege at the property in Wieambilla, west of Brisbane.
The brothers, along with a female, are the alleged offenders who police say shot and killed two armed officers and a member of the public last night.
Four Queensland police officers went to the property as part of a search for Nathaniel Train, who was subject to a missing persons report.
The 46-year-old was the former principal at Walgett Community College Primary School which is about 700 kilometres north-west of Sydney.
You can read more in this story from our Queensland team, which just went live:
WA Police Commissioner offers 'full support and condolences'
By Brianna Morris-Grant
Flags at Western Australian police stations will be flow at half-mast today as a mark of respect, said Western Australia's Police Commissioner Col Blanch.
"This is a tragic reminder of the dangers that police officers face on a day to day basis and there was undoubtedly extraordinary bravery shown by police in this tragedy," he said.
"Our thoughts are with the families, friends and colleagues of the officers.
"I know WA Police officers have also felt the impact of the deaths, and many have reached out to their colleagues in Queensland to offer support
"All officers across Australia and New Zealand will be feeling a sense of loss today.
"The law enforcement community comes together at difficult times like this."
