The mother of the children killed in the fire held back tears as charges were put to Dyson Allen that he killed Reece, Ella Holly and Jordan in the fire. He will stand trial in June.
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More than £1.5 million has been raised in the wake of the terrorist attack in Manchester on Monday night.
Chelsea football club has cancelled a homecoming parade to celebrate their Premier League title win.
Twenty-two people, including children as young as eight, were killed and at least 59 injured during the suicide attack.