Australian police have confirmed that an "active incident" is under way at a property in Porepunkah, about 300km north-east of Melbourne
Australian media say two officers have been shot dead and another has been injured
The federal police commissioner did not confirm this but has said there are "grave concerns" for some of the police officers involved in the incident
Gun crime is relatively rare in Australia, which has some of the world's strictest gun regulations
Watch: Police gather near scene of shooting in rural Victoria
Tiffanie Turnbull
BBC News, Sydney
We've just spoken with Ambulance Victoria, who have confirmed they're at the scene in Porepunkah.
Like Victoria Police, they aren't offering much detail, but a spokeswoman told us: "Paramedics have treated one person for serious lower body injuries and transported them by air in a stable condition."
Watch: Police gather near scene of shooting in rural Victoria
Dozens of police and emergency services rushed to Porepunkah this afternoon following reports of a shooting at a rural property.
Porepunkah is a small alpine town - home to about 1,000 people - in north-east Victoria.
This video shows on-site police briefings and a police helicopter circling the area. As a reminder, the situation is "still an active incident," Victoria Police say.
The Porepunkah airfield has closed due to the ongoing emergency response, according to its website.
The airfield is located two nautical miles south of Porepunkah in the Buckland Valley, the site says.
Police and emergency services still have access to it, according to news outlet the ABC.
Porepunkah, found in the South-Eastern Australian state of Victoria, is a small tourist town.
Mount Buffalo, a fierce rocky peak of more than 1300m, sweeps its skyline.
It is less than ten minutes drive from Bright, which describes itself as "one of Australia's most popular holiday destinations".
Ski and toboggan rentals are available in Porepunkah around this time of year and there are a wealth of other attractions including some wineries.
At the moment though, police are asking people to avoid the area as the active incident continues.
An ABC reporter on the ground in Porepunkah has just described what's happening on the scene, saying the large police presence that descended on the small alpine town earlier has now thinned out.
A local State Emergency Service (SES) team has arrived, the reporter says, but the frantic first hour when the reports of a shooting first emerged has changed dramatically.
"It was quite chaotic when I got here," Ashlee Aldridge said.
"Since the news that those two officers have been killed and a has been injured, the mood has become quite sombre."
Victoria Police say it's still an "active incident" in the area and urged the public to stay away.
Image source, EPAVictoria Police has just issued an update reiterating that this is "still an active incident", and that they will provide more information "when it's operationally safe to do so".
Beyond that, authorities have offered no information on what has unfolded at the property in Porepunkah, though we can see there is a large police presence there - including at least one armoured vehicle and a helicopter.
Local media, citing police sources, have reported a number of other details too, which we are trying to stand up:
Stay with us as we bring you the latest.
Ottilie Mitchell
BBC News, Sydney
Porepunkah Primary School, which is nearby the scene, is still under lockdown, a member of staff has told the BBC.
As a reminder, the school began its lockdown earlier this morning - it's now nearing 15:00 local time (06:00 BST), meaning children, teachers and parents have been waiting out the situation for hours.
When speaking to the ABC earlier today, the school's principal Jill Gillies said there were no plans for an overnight lockdown but noted that they would be able to carry one out if necessary.
"Let's hope it doesn't come to that," she concluded.
Commenting on reports that two officers have been killed and another injured, the Australian Federal Police Association - a union for federal officers - has issued a statement extending "its deepest thoughts to the officers, families, and colleagues of Victoria Police affected by today’s incident".
Local media have reported that police were at the property, about 300km north-east of Melbourne, to serve a warrant.
We've got some pictures from the scene thanks to the Australian Broadcasting Corporation.
Image source, ABC News/Annie Brown
Image source, ABC News/Annie Brown
Image source, ABC News/Annie Brown
Image source, ABC News/Annie BrownAustralian local media are now reporting that the suspected gunman is armed with a police officer's firearm.
Both The Age and 7 News have noted this, without naming their source. The BBC has been unable to independently verify this.
The alleged gunman is still at large, they say.
The Age, a major newspaper in Melbourne, are reporting that police were executing a warrant at the Porepunkah property for historical sex abuse allegations when officers were ambushed.
Again, worth noting that Victoria Police are yet to provide a detailed account of the incident.
Gun crime is relatively rare in Australia, which introduced some of the world's strictest gun regulations after 35 people were killed in a massacre by a lone gunman at Port Arthur, Tasmania, in 1996.
Since then, there have been only a few mass shootings - defined in Australia as those resulting in at least four deaths, excluding perpetrators.
Image source, Getty ImagesThe ongoing situation is happening at a rural property in Porepunkah, about 300 kilometres north-east of Melbourne.
Porepunkah is an alpine town near the base of Mount Buffalo in Victoria’s High Country.
It's about 6km (3.7mi) north of Bright on the Great Alpine Rd and at the junction of where the Buckland and Ovens rivers meet.
According to the latest census in 2021, Porepunkah is home to around 1,000 people and the town’s working population are mainly managers, technicians and trades workers, professionals and labourers.
We've just spoken to Victoria Police again - and they say they can't confirm the reported deaths as yet.
But about half an hour ago the head of the Australian Federal Police told reporters that there were some "grave concerns" for some of the officers who attended the scene.
"Our hearts go out to the community," he said, adding that he still hoped those officers were safe and well.
We've just heard from the Victorian premier, Jacinta Allan, who has issued a statement praising police bravery.
"Victoria Police officers, and all our first responders, show extraordinary bravery and courage every single day," she said.
"They are the best of us – and the thoughts of all Victorians are with them today."
She asked locals to follow the advice of Victoria Police, stressing that the situation remains active, and adding more information will be provided when it is available.
The principal of the local primary school, which is nearby the scene in Porepunkah, has told the ABC that students were placed into lockdown around 11:30am.
"We were told there was an incident near the school," Jill Gillies said.
"We have plenty of movies and distractions for the children and will continue to follow police orders."
The Alpine Shire Council has also closed all council facilities effective immediately.
Australia's Prime Minister Anthony Albanese has just commented on the unfolding situation in Porepunkah in north-east Victoria.
"Our thoughts are with the police for the work they do, each and every day," Albanese says.
"The men and women who wear our uniform, wear the uniform of the police, take risks each and every day.
Albanese says the Victorian police commissioner will give an update this afternoon "as more facts that are able to be released become clear".
This is an unfolding situation so we still have very few details of what has happened from authorities.
The Australian Broadcasting Corporation (ABC) has reported that two officers have been killed. The Age, a major newspaper in Melbourne, has reported the same.
We're working to confirm this with police ourselves.
Footage from the areas has shown a flood of police cars and several ambulances heading towards the scene.
Police have confirmed that an “active incident” is underway at a property in Porepunkah, which is about 300km north-east of Melbourne.
They’re asking people to avoid the area but are offering no further details.
“We will provide more information when it's operationally safe to do so,” a spokesperson said in a statement.
However local newspaper The Age is reporting that two officers have been shot dead and another has been injured - and federal authorities have said they have “grave concerns” for some of the officers involved.
Stay with us as we bring you live updates.