“He was howling, shrieking, and running from a demon he couldn’t see.”

A bumbling ram raid attempt ended with offenders escaping out windows early this morning.

The bodies of a mother and her teenage daughter have been found at a home in Sydney's north-west as police probe their mysterious deaths.

Police made the grim discovery after they were called to Menzies Road in Marsfield about 10.20am today for a welfare check.

They arrived to find Jennifer Carrig, 54, and her 13-year-old daughter dead.

READ MORE: Community holds vigil to mourn three children killed in Sydney house fire

A crime scene has been established and detectives have begun an investigation into their deaths.

Police are unable to confirm whether their deaths are suspicious.

Neighbours have told 9News they did not hear or see anything out of the ordinary. 

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

‘The common thread was his destructive use of methamphetamine.’

Police, including Armed Offenders Squad members, converged on Plimmerton this afternoon.

Residents living in Melbourne's west have been warned to avoid the area surrounding a toxic factory fire that is impacting air and water quality.

The large fire continues to burn after a "large chemical explosion" erupted at a factory on Swann Drive in Derrimut about 11.20am yesterday.

The fire was deemed under control at 3.32pm after 180 firefighters and more than 50 trucks responded to the "seventh alarm" fire.

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Police confirmed no injuries were reported as everyone in the warehouse and neighbouring properties were safely evacuated.

Residents in Derrimut and Laverton North have been warned to keep their windows closed due to toxic smoke, though this advice could change as wind keeps up this morning.

People have also been warned to avoid contact with water from Cherry Creek, Anderson's Swamp, and Kayes Drain, which have been contaminated by runoff.

The Environment Protection Authority said "no ash impacts" had been observed but urged people in the affected area to wipe down surfaces if they spotted ash, and to wash fruits and vegetables before eating them.

Fire Rescue Victoria Deputy Commissioner Community Safety Joshua Fischer said there were a number of chemicals and dangerous goods on site that were consumed in the fire.

He said the exact quantity was currently not known.

"We are now currently managing runoff of contaminated water as a result of the firefighting effort and contaminants in the building alongside the EPA," he said.

"It is a dynamic situation and we are undertaking atmospheric monitoring so we can allow businesses in the area to return to premises on a case by case basis.

"There are still road closures in place and a current 'Watch and Act' in place for the same area issued yesterday."

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9News understands it was the second fire at the same factory in less than a year after it went up in flames in October, resulting in the death of a 44-year-old man.

WorkSafe is responding and will investigate the company.

Fire Rescue Victoria said about three million litres of water and 40,000 litres of foam was used to suppress the fire.

There are three appliances currently undertaking firefighting operations to suppress the fire, with a further 11 appliances on the scene supporting.

It's expected the fire will continue to burn for several days.

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Residents are assured there is no current threat but to monitor conditions and stay informed. 

Telstra has also reported a 4G and 5G network outage in Derrimut.

There is also a power outage affecting some residents near the fire, according to PowerCor.

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Fire Rescue Victoria Deputy Commissioner Michelle Cowling earlier said a range of chemicals, including kerosene, fuel, methylated spirits and ethanol inside the factory had made it hard for crews to bring it under control.

She said fuel drums inside were exploding and launching into the air, making it dangerous for emergency services and residents. 

"We estimate we're going to be here a couple of days because of the fuel load in this factory," she said.

"We can't get in close enough to cool this fire down. It will have to be pulled apart."

Cowling said all the factories surrounding the site had also been evacuated, with the biggest threat to the community being the toxic smoke.

"We take this very seriously, we don't know what is in that smoke and smoke is toxic and will cause damage," she said.

Police were called to the site while Melbourne Water and the EPA assessed any damages yesterday.

Aerial vision showed burnt gas bottles at the site as the fire continued to grow.

https://twitter.com/VicTraffic/status/1810916298500755859

The flames forced a fence to fall and were seen inching dangerously close to a grassed area.

Heavy traffic delays were felt around the area after Swann Drive and the Western Freeway were forced to close.

Motorists were urged to avoid the area and keep their car ventilation on recirculate and windows up.

Victoria's Conservation Regulator is appealing for information as it investigates the death of more than 65 eastern grey kangaroos that were found on a country road in the state's centre last month.

The kangaroos were found on Saturday, June 22 with fatal gunshot wounds, and other injuries suggesting they had been rammed by a vehicle.

A wildlife shelter operator made the discovery in private paddocks along Tait-Hamilton Road at Gobarup, about 50km east of Bendigo.

READ MORE: Woman, teen girl found dead in Sydney home

The dead kangaroos were found spread across roughly 190 hectares of land. 

When the area was investigated, used shotgun cartridges were also found in the area.

Officers from the Conservation Regulator have spoken with a local landowner, who is not considered a person of interest.

Three kangaroos were found alive at the scene but were euthanised due to their injuries, while two joeys have been put in the care of a wildlife shelter.

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According to Victorian Crimestoppers, it is suspected that the kangaroos were killed between 6pm on Friday, June 21, and 4pm on Saturday, June 22.

In Victoria, all wildlife including kangaroos are protected under the Wildlife Act 1975, and it's illegal to hunt or destroy wildlife without authorisation.

The maximum penalty for each offence can be a fine of $9870 or six months in prison.

Anyone with information about the kangaroos' death has been asked to contact authorities.

Resident fears Dannevirke has a crime problem after homes repeatedly broken into.

Public speculation about the Aratere’s June grounding ramped up after an NZ First tweet.

The man said the line for physical touch was blurry and his training didn’t cover it.