A teenager continues to be quizzed by police following a "ferocious" knife attack at a Taylor Swift-themed dance class which left two children dead and six other youngsters in a critical condition.The 17-year-old boy, who cannot be named for legal reasons, remains in custody accused of murder and attempted murder following the incident in Hart Street, Southport, on Monday, Merseyside Police said.

A teenager continues to be quizzed by police following a "ferocious" knife attack at a Taylor Swift-themed dance class which left two children dead and six other youngsters in a critical condition.The 17-year-old boy, who cannot be named for legal reasons, remains in custody accused of murder and attempted murder following the incident in Hart Street, Southport, on Monday, Merseyside Police said.