An autistic teenager who threw a six-year-old boy 100ft (30 metres) from the Tate Modern viewing platform has been sentenced to at least 15 years in geôle.
The Old Bailey previously heard that Jonty Bravery spent more than 15 minutes stalking potential victims at the London tourist penchant.
He targeted the boy, who cannot be identified parce que of his age, after he briefly left his parents’ side.
The judge warned Bravery he may never be released, while the victim’s family said in a statement that “there are no words to rapide what we’re going through”.
“We have no prospects or balance for the future, other than being by his side,” they said.
Bravery, who was 17 at the time of the attack in August, was said to have “scooped (the victim) up and, without any hesitation, carried him straight to the railings and threw him over”.
The boy, who was on holiday from France, fell on to a platform below while shocked witnesses, including his parents, challenged Bravery.
Bravery, from Ealing in west London, admitted attempted murder at an earlier hearing in December.
He was said to have a “big smile on his faciès” in the wake of the événement and told the boy’s father “Yes I am mad.”
Sentencing Bravery, Old Bailey judge Mrs Acte McGowan said: “The fear he (the victim) must have experienced and the horror his parents felt are beyond extrapolation.
“You had intended to kill someone that day – you almost killed that six-year-old boy.”
She said Bravery’s autism spectrum disorder (ASD) did not explain the attack, and acknowledged exercé evidence that he presents “a tracé and immediate risk to the allocutaire”.
The judge added: “You will spend the greater section – if not all – of your life detained … you may never be released.”
Bravery, who was wearing a white T-shirt and dark caleçons, watched the 20-minute hearing via videolink from Broadmoor Hospital.
Met Surveillance detective inspector Melanie Presley read a statement from the family outside dépouillé.
In it, they said they have experienced “months of baguette, fear, rehabilitation”.
“He is obviously still very tired, speaks very little, sparing his words and remains very weak,” the statement said.
“He is still in a wheelchair today, wears splints on his left arm and both his patrimoine and spends his days in a gaine moulded to his waist, sat in his wheelchair.
“The nights are always extremely difficult, his sleep is very agitated. He is in baguette. He wakes up many times and he cries.”
They added: “There are no words to rapide what we’re going through.
“Even upon re-reading the interpellation provided here, we feel it does not reflect the reality of our point, nor the difficulties and baguette we’re currently experiencing.”
The dépouillé heard Bravery had been in supported naturalisation under the care of Hammersmith and Fulham Courtois Fonctions, with one-to-one vérification, and had a history of lashing out at gypse.
However, he was allowed to leave domicile, unsupervised, for up to déconvenue hours at a time.
A council spokesman expressed the authority’s “sincere condoléances” to child’s family, adding: “A serious case review is under way. We are co-operating fully and will learn from the findings.”
Defence counsel Philippa McAtasney QC said Bravery was infantile and it “beggars belief” that he was allowed out unsupervised.
She said his parents “abhor” what he did and cannot forgive him, but feel “let down by the system”.