Knife attacker Axel Rudakubana has pleaded guilty to murdering three young girls at a Taylor Swift-themed dance class in Southport.
The 18-year-old stabbed Alice da Silva Aguiar, nine, Bebe King, six, and seven-year-old Elsie Dot Stancombe, along with 10 others on 29 July last year, in a "meticulously planned rampage".
As his trial was set to begin at Liverpool Crown Court, Rudakubana, who prosecutors said had "shown no remorse", unexpectedly entered guilty pleas to all charges, including murder, attempted murder and terror-related offences.
The victims' families were not in court and the judge apologised to them, saying "we had all assumed" the trial would get under way in earnest on Tuesday.
Rudakubana, of Banks, a village in west Lancashire, also admitted producing the biological toxin ricin and a charge under the Terrorism Act related to possessing an al-Qaeda training manual.
Government sources have told the BBC that Rudakubana was referred to the government's counter-terrorism Prevent programme several times before the attack over his general obsession with violence and he had been visited by police.
The Home Secretary Yvette Cooper has announced a public inquiry will be held into the attacks.
He added: "There are grave questions to answer as to how the state failed in its ultimate duty to protect these young girls.
As each charge was put to him, Rudakubana, who had his face covered with a PPE mask, quietly said "guilty" to each count.
"Those who sit with me say you have nodded your head to indicate you can hear what I am saying."
Rudakubana cannot be sentenced to a whole-life term for his crimes because he is under the age of 21.
Rudakubana, who was 17 at the time, also stabbed eight other children along with yoga teacher Leanne Lucas, who was instructing the class, and businessman John Hayes, who was one of the first people on the scene.
A peaceful vigil was held in the town the next day, but misinformation spread online about Rudakubana led to a riot breaking out.
Posts claiming he was an asylum seeker who had arrived in the UK on a small boat were shared widely.
The violent unrest quickly spread around the country.
About 1,200 people have been arrested in connection with the riots in towns and cities across the UK, and more than 400 charged.
Dozens of them have been jailed.
He said: "We are all hoping the families get the outcome and justice they need."
The Labour MP said he was pleased the victims' families would not have to sit through the "mental torture" of a lengthy trial.
"This isn't a day for celebration - it is a day to make sure we remember the victims," he added.
In the days following the murders, Alice was described by her family as a "perfect dream child" who "moved their world" with her "confidence and empathy".
Bebe's parents Lauren and Ben King said she was a "sweet, kind, and spirited girl" who was "full of joy, light and love".
Elsie Dot was said to be "extraordinary" and an "amazing little girl".
The corner of the street near to where the attack happened became a sea of flowers, as people from all around the country came to pay their respects, including King Charles.
Rudakubana was born in Cardiff to Rwandan parents in 2006, and moved to Banks near Southport in 2013.
He started behaving violently from Year 9 and was excluded from Range High School in Formby in October 2019 at the age of 13.
He had attacked a pupil with a hockey stick and had to be restrained by a teacher.
Rudakubana was prevented from returning to his former school a week before the stabbing murders after his father pleaded with a taxi driver not to take him.
He was wearing the same hooded sweatshirt and surgical mask he wore during the attack one week later.
Speaking after the hearing, Ursula Doyle, deputy chief crown prosecutor for Mersey and Cheshire, described the attack as "unspeakable".
"At the start of the school holidays, a day which should have been one of carefree innocence; of children enjoying a dance workshop and making friendship bracelets, became a scene of the darkest horror as Axel Rudakubana carried out his meticulously planned rampage," she said.
Ms Doyle added: "It is clear that this was a young man with a sickening and sustained interest in death and violence.
"He has shown no sign of remorse."
