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The Met spokesperson said detectives were continuing with their murder investigation into Ms Rook's death.

Asked about the city’s efforts, White House spokesperson Abigail Jackson said in a statement that U.S.

"The male and female were treated at the scene by colleagues from Northern Ireland Ambulance Service, then taken to hospital for treatment for smoke inhalation," said a police spokesperson.

A City Hall spokesperson said it has been working with partners to ensure the safety of carnival-goers, which it described as "paramount".

Two men, aged 37 and 39, were taken to hospital with serious but not life-threatening injuries, a Met spokesperson said.