Father who slaughtered his wife, three children and their grandmother is jailed ...

A man who killed his wife, three young children and mother-in-law has been sentenced to life in prison with no chance of parole.

Anthony Robert Harvey, 25, used knives and a blunt instrument to butcher his family at his home in Bedford, Perth last year.

He killed his two-year-old twins Alice and Beatrix, three-year-old Charlotte and their mother Mara Lee Harvey, 41, at their Bedford home on September 3, 2018.

Cradling his newborn daughter in his arms, Anthony Harvey looked every bit the proud father as he gazed at the baby girl he killed three years later

Cradling his newborn daughter in his arms, Anthony Harvey looked every bit the proud father as he gazed at the baby girl he killed three years later 

Anthony Harvey (pictured with his wife Mara), 25, used knives and a blunt instrument to butcher his family at his home in Bedford, Perth last year

Anthony Harvey (pictured with his wife Mara), 25, used knives and a blunt instrument to butcher his family at his home in Bedford, Perth last year

Grandmother Beverley Ann Quinn, 73, was murdered when she visited the next morning, the WA Supreme Court heard on Friday.

He lived with the bodies for five days before turning himself in. 

Harvey, who owned a francise of lawn-mowing service Jim's Mowing, was sentenced to life behind bars with an order to never be released on Friday after earlier pleading guilty to the murders.

He is the only person in Western Australia to be given the strict sentence. 

Justice Stephen Hall said there were no other case that were 'truly comparable'.

'You’re actions were so far beyond the bounds ... they would instil horror and revulsion in the most hardened of people.'

He said life in prison without the chance of parole was justified. 

He said the women were unsuspecting, while the children were asleep when they were attached.

Taryn Tottman lights candles on the coffins of her mother Beverley Quinn, her sister Mara Harvey and Mara's daughters, Charlotte, Alice, and Beatrix during their funerals in Perth in 2018

Taryn Tottman lights candles on the coffins of her mother Beverley Quinn, her sister Mara Harvey and Mara's daughters, Charlotte, Alice, and Beatrix during their funerals in Perth in 2018

Contrary to appearances, Harvey 'wasn't fond' of his daughters and in numerous fights with his wife declared he wanted to be rid of them

Contrary to appearances, Harvey 'wasn't fond' of his daughters and in numerous fights with his wife declared he wanted to be rid of them 

'This is the place they should have been safest,' Justice Hall said.

'They should have been able to trust their father to protect them.

'That's the most fundamental duty any parent has.'

Parts of Mr Harvey's crime have been suppressed by the court as they were deemed too horrific.

During his sentencing hearing, the court heard how Mr Harvey had kept a journal where he expressed his desire to embrace 'darkness and animal instincts'.

'I am no psycho. I feel. I feel too much, I always have … I will regret what I do.'

Justice Hall said the journal was not an expression of a fantasy but showed killings had been planned.

A photograph is displayed of Beverley Quinn (top left) , Mara Harvey, and Mara's daughters, Charlotte, Alice, and Beatrix during their funerals in Perth in 2018

A photograph is displayed of Beverley Quinn (top left) , Mara Harvey, and Mara's daughters, Charlotte, Alice, and Beatrix during their funerals in Perth in 2018

He killed three-year-old Charlotte, two-year-old twins Alice and Beatrix (pictured), and their mother Mara, 41, on September 3. He then murdered his wife's mother Beverley Quinn (pictured), 73, when she came to visit the next morning

He killed three-year-old Charlotte, two-year-old twins Alice and Beatrix (pictured), and their mother Mara, 41, on September 3. He then murdered his wife's mother Beverley Quinn (pictured), 73, when she came to visit the next morning

The court heard Ms Quinn and Ms Harvey were struck on the head with a pipe and repeatedly stabbed with a newly purchased large knife.

Harvey said he quickly tried to 'finish' his wife of three years, stabbing her at least 12 times.

Ms Harvey was killed in the kitchen and the girls in other rooms of the house. Ms Quinn was murdered beside the body of her daughter.

The children were murdered with a smaller knife, with Charlotte stabbed 38 times 

The callous killer is believed to have taken his white ute and Jim's trailer to complete two jobs just hours later like nothing had happened.

He stayed at the house for several days as the bodies simply lay on bloodstained floors and furniture where he left them.

Mr Harvey then drove 1,400km north to Pannawonica where he has family, and handed himself into police on September 9. 

Mara Harvey, pictured, was murdered by her evil husband only minutes after finishing work

Mara Harvey, pictured, was murdered by her evil husband only minutes after finishing work

Hundreds donated tens of thousands of dollars to pay for the funerals, where the girls were buried in three tiny coffins topped with teddy bears

Hundreds donated tens of thousands of dollars to pay for the funerals, where the girls were buried in three tiny coffins topped with teddy bears 

His unthinkable crimes shocked Australia and left friends, family, and neighbours seeking answers as to why he did it.

Months after the murders, heartbroken close friends of Ms Harvey have revealed signs of the family's downward spiral.

'Anthony was lazy and drunk and high and wanted to spend all his time having fun and partying instead of being a dad,' one told Daily Mail Australia.

'He thought [his wife and children] were cramping his style.'

Contrary to appearances, Harvey 'wasn't fond' of his daughters and in numerous fights with his wife declared he wanted to be rid of them.

'He'd say he wanted to be free of her and the girls,

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