A British teenager on Monday pleaded guilty to charges of murdering three young girls in a knife attack in northern England in July, a crime that horrified the nation and was followed by days of nationwide rioting.

Axel Rudakubana on Monday admitted committing the deadly attack last July. Officials later said he had been referred to a government counterterrorism program three times before his rampage.

A teenager has pleaded guilty to murdering three young girls in a “meticulously planned” knife attack at a Taylor Swift-themed dance class in north-west England in July last year.

Britain announced a public inquiry on Monday into the murder of three young girls in a knife attack at a Taylor Swift-themed dance event last year, a crime that ignited days of violent riots. Interior minister Yvette Cooper announced the inquiry after British teenager Axel Rudakubana,