Michael Martin tried to kill his father by injecting him

A man found guilty of murdering his father with a samurai sword allegedly tried to kill him once before by injecting him with blood, bile and faeces.

The disturbing claims were brought forward by Michael Phillip Martin’s wife Candace Martin during a sentencing hearing in the Supreme Court in Lismore, New South Wales.

Mrs Martin claims she found ‘putrid smelling’ syringes filled with a fungal-green coloured liquid in her husband’s sock drawer just days after his father developed septicaemia and had a cardiac arrest in hospital, The Northern Star reports.

Michael Martin Junior, 28, (pictured) made an emotional plea to find his father’s killer, but was later charged with murder

Crown prosecutor Brendan Campbell suggested that Mrs Martin's statement depicted Michael Jnr as a 'monster'

Crown prosecutor Brendan Campbell suggested that Mrs Martin’s statement depicted Michael Jnr as a ‘monster’

The syringes were found, and later disposed of in a lit fireplace, in May 2014 – just a month before Michael Snr was murdered. 

Crown prosecutor Brendan Campbell suggested that her statement depicted Michael Jnr as a ‘monster.’

Michael Phillip Martin told police his father, Michael Anthony Martin, was killed by home invaders after being found by a neighbour tied up in South Murwillumbah, northeastern New South Wales.

Investigators later discovered Martin Junior had taken out three life insurance policies online, worth $2.5 million, against his 46-year-old father for an ‘accidental death.’

Mrs Martin (pictured) claims she found 'putrid smelling' syringes filled with a fungal-green coloured liquid in her husband's sock drawer just days after his father developed septicaemia and had a cardiac arrest in hospital

Mrs Martin (pictured) claims she found ‘putrid smelling’ syringes filled with a fungal-green coloured liquid in her husband’s sock drawer just days after his father developed septicaemia and had a cardiac arrest in hospital

Michael Martin Senior, pictured, survived an attack in May 2014 but was killed just weeks later at his South Murwillumbah home on the NSW north coast

Michael Martin Senior, pictured, survived an attack in May 2014 but was killed just weeks later at his South Murwillumbah home on the NSW north coast

Mrs Martin has also revealed she saw her husband grinding off the tip of his samurai sword in their garden shed after the murder, which had a ‘red sheeny stain’ on the blade.

Michael Junior went on to break the sword up into pieces, ‘dipping it in acid and dumping it’ in a Coles bag.

A Supreme Court jury in Lismore on Wednesday found Martin Jnr guilty of attempted murder, murder, and grievous bodily harm with intent. 

Police believe Martin Junior had been driven by hate, built up from years of abuse as a child, to kill his father for the payout. 

Michael Martin Junior has claimed he was forced to listen while father was killed

Michael Martin Junior has claimed he was forced to listen while father was killed

He told police he was bound and blindfolded during a murderous home invasion

He told police he was bound and blindfolded during a murderous home invasion

Investigators discovered he had three life insurance policies worth $2.5 million

Investigators discovered he had three life insurance policies worth $2.5 million

The jury had been shown a letter Martin Junior sent to his wife Candace after the murder. 

‘Money got tighter and we had another bright idea to free our lives up more… you and I would finally be able to have the things in life we ever wanted,’ he said, 9 News reported. 

‘Twenty-five years of torture from these people led me to do the unthinkable.’

He wrote that he was a very hurt man, who had been through so much from someone who should have been his number one supporter. 

The jury were not swayed by Martin Junior’s claims he was mentally unstable when he penned the letter or his recount of his recorded police interview.

Martin Junior will face a sentence hearing on November 3.

The jury had been shown a letter Martin Junior sent to his wife Candace after the murder

The jury had been shown a letter Martin Junior sent to his wife Candace after the murder

Martin Junior, 25, was found guilty of murdering his father with a samurai sword

Martin Junior, 25, was found guilty of murdering his father with a samurai sword

Read more at DailyMail.co.uk