A British court sentenced teen Axel Rudakubana to a record 52 years in prison, minus time served, for murdering three young girls in a frenzied stabbing attack at a Taylor Swift-themed dance class in Southport in July.

Rudakubana, 18, pleaded guilty on Monday to murdering three girls, 10 attempted murders, producing ricin, possessing terrorist material, and possessing a knife.

Axel Rudakubana, 18, will probably never be released, a judge ruled as he condemned the “extreme violence” of his knife attack on a dance class last year.