Six months after a teenage attacker stabbed three girls to death at a children’s dance class in England, new details about his background have sparked questions about how authorities repeatedly failed to spot the threat he posed.

Axel Rudakubana, 18, was sentenced to serve at least 52 years for a stabbing rampage at a Taylor Swift-themed dance class. The sentence means he cannot apply for parole until he is almost 70, and judge Julian Goose said “it is likely he will never be released.

A teenager who stabbed three young girls to death at a Taylor Swift-themed dance class in England has been sentenced to more than 50 years in prison.

Axel Rudakubana admitted a total of 16 charges, including the three counts of murder, 10 counts of attempted murder and one count of possessing a blade.

The 18-year-old’s disruptions meant he was not in court as the judge handed him one of the longest minimum terms on record.

Axel Rudakubana, 18, was sentenced to over 50 years in prison for killing three young girls and wounding 10 others at a Taylor Swift-themed dance class in Southport, England last summer. Police’s raid at his house has revealed his ‘longstanding obsession with violence,

The 18-year-old pleaded guilty to all 16 offences he faced on the first day of his trial at Liverpool Crown Court on Monday. | ITV News Granada

The Southport killer said 'I’m glad they’re dead' as he was held in a custody suite after killing three girls at a dance class, the court heard

During the trial of the case, it was revealed that two years before the attack, Rudakubana’s parents had called the police four times in six months asking for help

A teen has pleaded guilty to murdering three girls and wounding 10 other people in a stabbing rampage at a Taylor Swift-themed dance class in England last summer.

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It will look into the contact between local agencies and the attacker, who killed three young girls at a dance class in Southport