Taylor Swift 'in shock'  3 children dead at his Swift-themed class

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A 9-year-old girl "died in hospital in the early hours" of Tuesday morning

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10 injured, eight are children and two are adults

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Five of the injured children "are in a critical condition

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The two children who died Monday were 6 and 7 years old.

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Taylor Swift says she is "at a complete loss"

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I’m just completely in shock," Swift wrote on her Instagram story

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A 17-year-old male was arrested on suspicion of murder and attempted murder

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