A 19-year-old who murdered his family and wanted to be the worst mass killer the UK has seen, had obtained 33 cartridges to carry out an attack on his former school, a court has heard.
Nicholas Prosper shot his mother Juliana Falcon, 48, sister Giselle, 13, and shot and stabbed his brother Kyle, 16, at their family home in Luton on 13 September last year.
But he did not plan on stopping there, according to prosecutor Timothy Cray KC, who told Luton Crown Court he had prepared the murders “for months” and wanted to kill at least 30 schoolchildren.
“His planning was cold, deliberate and without sympathy or emotion towards the actual victims or potential victims,” he said, speaking at Prosper’s sentencing.
His “main wish”, however, was to “achieve lasting notoriety as a mass killer”, Mr Cray added, specifically to “imitate and even surpass other mass killers around the world”.
“He had conducted in-depth internet research on shootings in the United States of America, Norway, Australia and New Zealand,” he said.
“He understood his plans, if realised, would bring about the greatest number of deaths in a school or other mass shooting in the United Kingdom and possibly even in the United States of America.”
Nicholas Prosper
The investigation suggests that the defendant “acted alone”, he added, and “his plans did not arise from any political or ideological cause”.
Prosper had undiagnosed autism spectrum disorder (ASD), the court heard, but he showed “extreme lack of empathy with others and an extreme lack of remorse” that can’t be explained by ASD alone.
Gruesome murders
Prosper never reached St Joseph’s Catholic Primary School, which was three-quarters of a mile from his home, as police arrested him after he escaped to a wooded area.
After he left, officers broke into his family flat at about 5.50am, following a call from a neighbour.
There, the court heard they found Prosper’s little sister underneath a dining table in the living room, “as if she had been trying to hide there”.
His mother and brother – who was stabbed more than 100 times – were both found in the hallway.
Giselle Prosper (left), Juliana Prosper (centre) and Kyle Prosper. Pic: family pics issued via Bedfordshire police
He had planned to kill his family in their sleep, but when his mother realised something was wrong and challenged him, it led to “an extended violent struggle”.
After the horrific and noisy attack on his family members, Prosper knew police would be on their way and so had to leave three hours earlier than he had anticipated.
The teenager was then arrested by a passing police patrol as he walked along a residential road in Luton.
He had hidden the shotgun and cartridges nearby.
Prosper admitted their murders at a hearing last month, as well as purchasing a shotgun without a certificate, possession of a shotgun with intent to endanger life and possession of a kitchen knife in a public place.
Plans long in the making
These killings were planned for more than a year, the court heard, with Prosper managing to buy a shotgun with a fake firearms certificate.
He had put together a black and yellow uniform he wanted to wear for his killing spree, and he had filmed a video of himself holding a plank of wood as a mock gun.
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Prosper pretends plank of wood is gun
Read more:
Juliana Prosper ‘will be terribly missed’
‘He didn’t seem like he had anything wrong with him’
Prosper had included his own name, a picture and his real address on his fake firearms licence, the court heard.
He had also inserted the signature of a Bedfordshire Police firearms sergeant on 30 August last year.
On the same day, Prosper messaged a private seller who had advertised a shotgun for £450, offering to pay £600 if cartridges were included, Mr Cray said.
The seller agreed to drop the gun off to him on 12 September, the day before the killings, prompting Prosper to respond in a message: “I look forward to meeting you.”
Forensic examiners found Prosper had fired seven cartridges, the first being a test shot into a teddy bear in his bedroom.
The sentencing hearing continues.
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