Friday's news in 5 minutes.

Warning: This article contains information about violence and child abuse, which may be distressing for some readers.

1. Mum charged with five counts of murder after four young children and their father were found stabbed to death.

NEW: According to warrants obtained by @FOX5Atlanta, Isabel Martinez has been denied bond after allegedly killing family members. pic.twitter.com/LEdT1gpLHZ

— Claire Simms (@Claire_FOX5) July 6, 2017

A mother has been charged with five counts of murder after four young children and their father were found slain in a home outside Atlanta, Georgia, in the United States.

Police say the mother rang 911 early on Thursday to report the killings.

The five victims were apparently stabbed to death while a fifth child, a girl, survived and was hospitalised with injuries described as serious, Fox 5 Atlanta reports.

The woman was detained by police after the bodies were found inside the home in Loganville, Gwinnett County police Corporal Michele Pihera told reporters at the scene.

Police later charged 33-year-old Isabel Martinez with five counts of malice murder, five counts of murder and six counts of aggravated assault.

Police have not said whether she was injured and said a motive wasn’t immediately known.

“Right now we believe we have everybody involved in this crime,” Pihera said.

She said early indications were that a knife was used to attack the five, though a medical examiner will make the final determination about the cause of death.

The four children killed appear to be under age 10, Pihera said. Their slain father was in his mid-30s.

Some neighbours in the small, largely Hispanic neighbourhood said they had no clue anything was amiss in the home until police mobbed the scene on Thursday morning.

They said the Spanish-speaking family had moved to the community recently, and their children seemed happy playing with other neighbourhood kids.

Jim Hollandsworth of The Path Project, a non-profit group running an after-school program the family’s children participated in, said the children spoke English as a second language but were fluent.

“It’s awful. It’s devastating. Everyone is in complete shock,” he said.

“The kids were engaged in what we’re doing. They were happy. They were fantastic kids with a bright future.”

2. Police are hunting for a man who flashed two children on a Melbourne tram.

Police are hunting a man who exposed his genitals to a baby and a young child on a Melbourne tram. #9News https://t.co/YfxnhnMN6Z

— Nine News Melbourne (@9NewsMelb) July 6, 2017

Police are hunting a man who flashed two children on a Melbourne tram, AAP reports.

The man was travelling through St Kilda on the route 16 tram on June 11 when he exposed himself numerous times to a one-year-old and seven-year-old child.

According to 7 News, the man then disembarked the train at Union Street, Windsor.

Police on Thursday released a computer generated image of the man, who is believed to be aged in his 40s and had a dark beard and pot belly. Police have also released CCTV footage of the man on the tram.

He was wearing a grey hooded jumper, grey tracksuit pants, a black hat and blue and yellow sneakers at the time of the incidents.

Anyone with information is urged to contact Crime Stoppers on 1800 333 000.

3. Female hiker dies after falling from a cliff in Queensland’s Glass House Mountains.

Woman killed in Glass House Mountains cliff fall https://t.co/Pd0cBt1jVu pic.twitter.com/nu3h7yGVtQ

— ABC News Brisbane (@ABCNewsBrisbane) July 6, 2017

A woman has died after falling off a cliff face in Queensland’s Glass House Mountains, AAP reports.

Paramedics tried to revive the injured 58-year-old woman, but she died at the scene on Thursday morning.

Acting Senior Sergeant Trevor Mills said it appeared the woman had fallen off a 50-metre cliff.

“We’re currently undertaking an investigation as to the circumstances surrounding how she has fallen off the mountain,” Acting Senior Sergeant Trevor Mills said.

She had been walking the summit track of Mt Ngungun and it had been difficult for emergency crews to reach her.

The popular Mt Ngungun summit track is advertised online as a graded path that leads through a steep, rocky gully and can be completed with relative ease.

4. Trump warns North Korea he’s considering a “severe response” to their “very, very bad behaviour”.

The US has issued a stern warning to North Korea that it is willing to go to war to defend itself and its allies. #7News pic.twitter.com/y2KVJD2KDx

— 7 News Melbourne (@7NewsMelbourne) July 6, 2017

President Donald Trump has warned North Korea that he’s considering “some pretty severe things” in response to the isolated nation’s unprecedented launch of a missile capable of reaching the US. He called on all nations to confront the North’s “very, very bad behaviour.”

Trump, in his first public comments since North Korea tested an intercontinental ballistic missile for the first time, declined to offer specifics about what a US response might entail, though called it a “threat” and said the US would “confront it very strongly.”

Trump said it wasn’t certain he’d follow through on the severe steps he was weighing, adding that he does “not draw red lines”, AAP reports.

“It’s a shame that they’re behaving this way,” Trump said of North Korea’s leaders.

“But they are behaving in a very, very dangerous manner, and something will have to be done about it.”

The US has been considering a range of possible sanctions, economic measures and other steps in response to Pyongyang.

The test of an ICBM marked a major technological advancement for North Korea that US officials have described as intensifying the threat against the US by bringing the North closer to being able to mount a nuclear warhead atop a missile that could hit American soil.

5. A study has shown that IVF does not increase a couple’s risk of divorce.

Going through IVF places huge strain on couples but does not increase divorce rateshttps://t.co/kBUN8FBIjC

— Daily Mail Online (@MailOnline) July 5, 2017

Despite fears many marriages won’t survive the stress of infertility, a large study involving more than 40,000 Danish women has found IVF does not increase the risk of divorce.

“Our results will be reassuring for couples who have had or are contemplating IVF,” said investigator Dr Mariana Martins from the Faculty of Psychology at the University of Porto, Portugal.

Dr Martins presented the results of the nationwide study at the 33rd Annual Meeting of ESHRE in Geneva.

The cohort study was based on data of all women having assisted reproduction treatment (ART) in Denmark between 1994 and 2009, a total of 42,845 patients.

One-fifth, or 20 per cent, ended up separated or divorced 16 years after undergoing the fertility treatment, according to the findings.

When both partners’ age, education and partnership status was factored in, no difference in the risk of relationship break-up was found.

Dr Martins suggested that the risk of break-up is mainly influenced by “childlessness”.

No couple is immune to some degree of stress but obtaining the appropriate knowledge and having realistic expectations about success rates can make the journey easier, advises Dr Martins.

“We also know that despite all the strain that this infertility can bring, going through ART can actually bring benefit to a couple’s relationship, because it forces them to improve communication and coping strategies,” Dr Martins said.

6. German authorities shut down child porn website with more than 87,000 members.

German police bust child porn ring with 87,000 members https://t.co/0dR9f0clYZ

— Daily Mail Online (@MailOnline) July 6, 2017

German authorities say they have shut down an online child porn site that had more than 87,000 members and arrested the man suspected of running it, AAP reports.

The Federal Criminal Police Office said Thursday the so-called darknet platform called ELYSIUM had been active since the end of 2016. It says the site was used to share pornography and to make arrangements for sexually abusing children.

Investigators identified a 39-year-old man from the central German state of Hesse, whose name wasn’t given, as the site’s administrator.

He was arrested June 12 after his apartment was searched and the server seized.

The police office says an unspecified number of further suspects were arrested, largely in Germany and Austria.

Darknet sites can be visited only by using special software and aren’t visible to regular web users.

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