By Sachin Ravikumar and Elizabeth Piper LONDON (Reuters) -UK Prime Minister Keir Starmer vowed on Tuesday to "leave no stone unturned" to uncover failings by the state in preventing the killings of three girls at a Taylor Swift-themed event,

Prime Minister Keir Starmer said the government must also answer “tough questions” about how authorities failed to stop a violence-obsessed teenager before he stabbed three young girls to death in the seaside town of Southport in July.

The prime minister has addressed the nation after the government announced an inquiry into state failings to prevent the Southport attack.

Prime Minister Keir Starmer says the killing of three young girls at a Taylor Swift-themed dance class must lead to “fundamental change” in how the British state protects citizens.

Last summer’s Southport killings will mark a “line in the sand” for Britain, Sir Keir Starmer has said, promising to introduce new terror laws if necessary.

SIR Keir Starmer has said the Southport killings “must be a line in the sand for Britain”. The Prime Minister addressed the nation on Tuesday morning, after Axel Rudakubana, 18, pleaded guilty on Monday to murdering three girls at a Taylor Swift-themed dance class last July.