A British teenager who killed three young girls at a Taylor Swift-themed dance event has been jailed for at least 52 years.

Reuters says 18-year-old Axel Rudakubana admitted to killing the girls and stabbing 10 others last July in Southport.

The incident shocked Britain and was followed by days of nationwide rioting.

Judge Julian Goose said he could not impose a full life sentence as Rudakubana was 17 when the attack took place.