Police say the railway death will be referred to the Coroner.

Remains found in the hunt for a teenager who went missing in Tasmania have been confirmed to be those of Shyanne-Lee Tatnell.

DNA testing confirmed the remains found last week in bushland near Nabowla, north-east of Launceston belong to the 14-year-old who was last seen alive in Launceston in April this year, Tasmania Police said today.

Christopher Mark Jordan, 36, from the nearby town of Scottsdale, was charged with her murder on Thursday afternoon.

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He briefly appeared in Launceston Magistrates Court on Friday and didn't enter a plea to one count of murder.

Shyanne-Lee was last seen walking near the North Esk River in Launceston on the night of April 30 and was believed to be on her way to visit a friend.

Tasmania Police launched one of the biggest searches in the state's history in bushland near Nabowla, about 50km north-east of Launceston, last week.

About 180 police and search and rescue personnel were on Wednesday involved in searches in two locations, including one where a cadaver dog was used.

The bushland search near Nabowla covered more than 50 square kilometres and involved helicopters, motorbikes, ATVs, drones, and horse riders.

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Jordan has been remanded in custody and is expected to appear in court on August 16 via video link.

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“Atmospheric rivers” shown to contribute huge chunk of monthly rainfall in west and north.

This mahi is not a solitary effort; it’s a collaborative journey.

Brisbane's iconic The Myer Centre has closed its doors for the last time.

After more than three decades, bargain hunters have cleared out Myer's flagship Queen Street location in the heart of the city and its hallmark sign has been dismantled.

But the last rush was a far cry from the glory days, when the five-storey department store welcomed a stampede at every sale.

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In its 35-year history, the store hosted its own fun park, saw a mall gunman cause a customer lockdown in 2013, and finally endured the retail deathknell of the COVID-19 pandemic.

9News understands the new identity of the site will be announced by property group Vicinity tomorrow.

Surrounding businesses are hoping the site will become home to a major attraction, drawing significant foot traffic.

Griffith University has denied rumours the site could become its new city campus.

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At the age of 27, Rome Te Aho had a criminal record running for 17 pages.

The four missing military personnel who are presumed dead after a helicopter crash off the Queensland coast are being remembered by their colleagues, family, friends and government for their service.

Defence minister Richard Marles said "significant wreckage" of the MRH-90 Taipan aircraft has been discovered after the helicopter went down near Lindeman Island, which is near Hamilton Island, at about 11pm on Friday during the Talisman Sabre military exercises

Those onboard and missing were identified yesterday as Captain Daniel Lyon, Lieutenant Maxwell Nugent, Corporal Alexander Naggs, and Warrant Officer Joseph Laycock.

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"With every passing hour, it is now clear any hope of finding Captain Lyon, Lieutenant Nugent, Corporal Naggs and Warrant Office Laycock alive has been lost," Marles said.

"The tragedies that have taken place in the Whitsundays have transferred from those being of search and rescue to an activity of recovery."

Marles said there will be a full and thorough investigation into the crash but for now, the government and defence force stands with the families of the men.

"They will spend the rest of our lives with an unfavourable hole," Marles said.

"To them, we are so deeply sorry and so grateful.

"They have every right to feel an intense sense of pride.

"Amidst the inadequacy of these words that, I wanted to know they stand in the warm embrace of the entire nation."

Marles said defence exercises are serious and carry a "dangerous" risk but play a "critical part in providing for the collective security and peace of the region in which we live".

Marles said the helicopters were certified to fly but in the meantime have been grounded while the investigation is underway.

"In the meantime, our fleet of MRH-90s have been grounded and they will not fly again until we understand what has happened and we have modified or acted accordingly," he said.

Chief of the Defence Force General Angus Campbell said the return of the Taipans will form part of the aviation investigation.

"There is going to be an investigation is there always would be, and it will be utterly thorough, and consider all factors, but we must not speculate and we must not in any way influence or distort the presumptions of that investigation," he said.

Tributes to remember the four military personnel killed

Queensland MP Phillip Thompson, who served with Corporal Naggs in the First Battalion Royal Australian Regiment, said his thoughts, prayers and heart go out to his family.

"He was a happy guy, a great person, he was someone who was never too hard for anything," he said.

"A life of service. He was someone if you asked a question you'd get an answer.

"He's one of the nicest blokes I've ever met."

In the flux of tributes by government and ADF officials, Governor-General David Hurley extended his sympathy to the loved ones and colleagues of the four men.

"As they stepped forward to serve us, so must we to honour their memory, remember their sacrifice and support their families," he said.

"It is a tragedy, and Linda and my thoughts are with the families, friends and other defence force personnel at this difficult time. I hope that the knowledge of our nation's gratitude is of some comfort in this moment of intense grief."

Former ADF-member-turned-politician Jacqui Lambie said her heart goes out to the families of the four men.

"To the defence community out there, I just want you to know that you have the country behind you," she said.

"We are thinking of you."

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Search for bodies underway as MRH-90s reviewed

The search for the MRH-90 and the four aviators from the 6th aviation regiment based at the Holsworthy army barracks in Sydney is now a recovery effort.

An exclusion zone of more than 100 square kilometres is in place off the coast.

Campbell said authorities will do everything possible to bring the men's bodies home to their families.

The crash marks one of Australia's worst peacetime military disasters in almost 20 years, and came as the aircraft was being phased out of military use.

The decision to discontinue their use was made after one went down off the coast of New South Wales near Jervis Bay in March. Ten people were on-board, but all managed to make their way out.

The fleet was also grounded then but returned to the skies in April with "risk mitigations" in place, a Defence spokesperson said at the time.

Marles said the MRH-90s were due to come out of service at the end of next year in favour of Blackhawk aircraft.

"We will move through the process of putting the Blackhawks into service as quickly as we can, but as thoroughly as we need to, and we will not be finding MRH-90s until we understand what has happened," he said.

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Prime Minister Anthony Albanese said earlier it was a reminder that there were no "safe and easy days" for people in the military.

Albanese offered his condolences to the families of the victims, who he said were trying to "build a more peaceful and safe world" during the failed operation.

"On behalf of our nation, our thoughts and prayers are with the families, friends and colleagues of those who are missing," he said.

"Our thoughts are also with those that they serve alongside – friends, brothers and sisters in uniform who even now are aiding in the search effort. I'd also like to thank the support from other nations during this search effort".

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The defence has opened its case in Christchurch.

A mysterious item found washed up on a beach near Jurien Bay in Western Australia earlier this month is likely space junk from an Indian rocket.

The acorn-shaped object stunned authorities when it washed ashore at Green Head, about 220 kilometres north of Perth on June 16.

The Australian Space Agency believe the object was most likely debris from an "expended third-stage of a Polar Satellite Launch Vehicle".

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In a statement, the agency said medium-lift launch vehicle was operated by the Indian Space Research Organisation (ISRO).

"The debris remains in storage and the Australian Space Agency is working with ISRO, who will provide further confirmation to determine next steps, including considering obligations under the United Nations space treaties," the agency said.

Space lawyer and professor Melissa de Zwart told 9news.com.au last week that the object was a unique discovery.

"It is quite amazing that something this large has washed up," she said.

"It's quite interesting that this has happened."

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Although it's pretty rare, space junk has been found scattered across Australia over the past years.

In October last year, rocket fragments linked to SpaceX were discovered in the NSW Snowy Mountains.

NASA believes there are about 100 million pieces of debris orbiting the earth that are smaller than a millimetre and about 23,000 pieces larger than a softball.

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High-efficiency particulate air (HEPA) filters improve air quality by up to 30–74 per cent during bushfire events, according to a new study from CSIRO

A royal commission into Black Summer heard smoke associated with the fires was linked to the additional deaths of 450 people.

But new research from Australia's national science agency, published today in Public Health Research & Practice HEPA filters could help protect the 2.7 million Australians affected by asthma during extreme smoke events.

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Lead author and CSIRO scientist Dr Amanda Wheeler said using the filters inside homes could help provide protection against sources of "any smoke emission".

"Staying inside and closing windows and doors during extreme smoke events is important, but ultimately what provides protection against smoke pollution indoors are air purifiers fitted with HEPA filters," Wheeler said.

"Using more than one, if possible, inside houses is likely to lead to improved health outcomes.

"While the research was focussed on prescribed burns, the findings are relevant for protection during bushfire events more generally.

"They demonstrate that any smoke emissions, including from neighbouring houses' wood heaters can be managed better."

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The study came to its conclusion by monitoring indoor and outdoor concentrations of fine particulate matter, or PM2.5, during prescribed burning periods.

Until now there has been limited evidence air purifiers fitted with HEPA filters reduce exposure or health risks associated with PM2.5.

Wheeler said bushfires are the greatest threat to air quality in the country, and added that climate change is only increasing the complexity of bushfire mitigation.

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"Prescribed burns are an important part of fire management, but outdoor smoke can easily infiltrate homes and buildings, so it's critical that we find ways to protect populations from serious health impacts," she said.

Her comments mirror that of Former NSW Fire and Rescue Commissioner Greg Mullin, who told 9news.com.au bushfire seasons in Australia have extended because of climate change – and can now occur simultaneously across states.

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