The possibility of a mass drug overdose at a music festival at Sydney Olympic Park is being investigated.

A 40-year-old man died, another person was left in a critical condition and five others were hospitalised following the Dreamstate rave last night.

The Dome at Sydney Olympic Park hosted the music festival, billed as the ultimate trance and techno experience.

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Minister for Music and the Night-time Economy John Graham confirmed five people were rushed to hospital.

A possible mass overdose event was being investigated.

Dreamstate was yet to comment on the incidents in Sydney but shared a warning about high-dose MDMA capsules and pills from Victoria Health, ahead of the festival's Melbourne edition tonight.

The man who died is believed to have gone into cardiac arrest after taking illicit substances.

"This death has reignited the debate over government-run pill testing at festivals.

It wasn't offered last night but today at an event at Centennial Park it is.

Despite the weather, Laneway Festival drew in big numbers and a big police presence with drug-detection dogs working the crowd.

"It is a reminder that pill testing that has been going on is very important, has allowed information from health to be distributed," Graham said.

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Resident says festival and golf traffic has turned rural Te Arai roads into highways.

Andrew McLean’s lawyers argue there was no proper basis for his detainment.

The third victim of a plane crash over South Australia's Fleurieu Peninsula has been identified as a 20-year-old aspiring pilot about to embark on his career.

His devastated mum told 9News her son was never meant to be on the ill-fated flight which crashed into the ocean.

Lucas Di Biase recently graduated top of his class.

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"All you ever wanted to do since you were a toddler was to become a pilot," his devastated family said.

"Forever in our hearts. Forever 20. Fly high our beautiful boy."

He was not meant to be on the flight on Friday but never hesitated to jump in the back seat.

He was booked to go to Darwin tomorrow to follow his dreams alongside one of his best mates, Savvas Tsambarlis.

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"He was just so in love with it and he was so attached to all sorts of flying and he definitely wanted to one day be an airline pilot," Tsambarlis said.

"He was a great mate, he was funny, he was always having a laugh as much as we would talk about flying he was always good to talk to about everything else."

Also onboard the ill-fated training flight was 18-year-old Tristan Scheffers.

A video from his family showed his love of flying from a young age.

He'd just finished year 12 and was on his way to earning his commercial pilot licence.

His shattered dad paid tribute.

"Our beautiful boy who loved flying more than anything else spread his wings one last time on Friday," he said.

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They died when the Cessna 210 Centurian they were in plummeted into the sea off Goolwa near Adelaide.

Experienced pilot and instructor Leo Howard, described as "one of the best", was also killed.

An investigation is under way.

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"There'll be a thorough investigation by CASA but I think now more than anything else is about the community getting around the families of those who've lost their lives," South Australian Premier Peter Malinauskas said.

They were promised an encrypted app to freely discuss the drug trade. It was an FBI trap.

The single-vehicle incident happened to the east of Gore.

Lifeguards tracked the pod along Pāpāmoa Beach to protect swimmers.

A woman has had a scare after a venomous snake more than a metre long wrapped itself around her leg.

CCTV footage on Facebook page Snake Catcher Geelong shows the frightening moment a copperhead snake emerged from under a wall in her backyard on Friday at her Geelong home.

It got caught around her leg but it's unclear if it tried to bite her.

READ MORE: Coalition confirms it has reunited following bitter split over hate speech laws

Australian copperhead snakes are highly venomous, with bites potentially fatal if victims don't get quick medical help fast.

The footage shows her kick the snake off of her leg and out of the way before falling over.

She wasn't hurt, and was seen gesturing to other people to stay away from the snake.

READ MORE: Severe Tropical Cyclone Mitchell forecast to make landfall as residents sleep

According to the post the snake was about 1.2 metres long.

"When I caught up with her, she was shaky as, it will take her a while to get over this experience," Snake Catcher Geelong said.

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"Snakes often move along walls and fences."

The snake was removed from the garden by the snake catcher.

Copperhead snakes are often found in south-eastern Australia, though some have also been seen in Queensland.

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Nearby residents were warned to keep windows and doors closed due to billowing smoke.

Queenslanders who use symbols and slogans dubbed 'hate speech' could face two years in prison under new laws.

Symbols and slogans linked to Nazi propaganda as well as the Israel-Palestinian conflict are set to be banned in Queensland under legislation set to be tabled in parliament this week.

It will be an offence to use the slogan "from the river to the sea" as well as "globalise the intifada" in a public place, both of which have connections to the Middle East conflict, leaders said.

READ MORE: Coalition confirms it has reunited following bitter split over hate speech laws

Premier David Crisafulli claimed the laws would directly target antisemitism.

"This is about drawing a clear line and stamping out the embers of hatred that were allowed to burn unchecked for too long," he said.

"The Jewish community has been clear: Queensland needs stronger legislation backed by real enforcement to drive out antisemitism."

The new laws are similar to those rolled out in New South Wales in the wake of the Bondi terror attack, where 15 people were shot dead at a Hanukkah by the Sea event in Sydney last year.

Victoria has also strengthened its hate speech laws twice last year.

As part of the bill, assaulting or threatening a person officiating at a religious ceremony or damaging a place of worship could lead to seven years' prison.

Display of the Hizballah emblem will also be banned.

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The penalty for displaying terrorist symbols has also been increased from six months imprisonment to two years' prison.

Queensland Attorney-General Deb Frecklington claims the new legislation proves the government is backing and protecting the Jewish community.

"This Government is doing everything possible to stop the rise of antisemitism," she said.

"[The bill] introduces targeted reforms to ban terrorist symbols and phrases and improve safety around places of worship."

The changes come as Israel's Prime Minister Isaac Herzog plans to visit Australia, with protests planned in Sydney

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