Detectives investigating a fire in which six children died have arrested two people on suspicion of murder, police said.
A 55-year-old man and a 31-year-old woman, who are from Derby, were arrested this morning, Derbyshire Police said.
They added that they are in custody and will be questioned by officers in due course.
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The prime minister was shouted at as she left the scene of the tragedy in which at least 79 people died.
Father-of-six Makram Ali, 51, was already receiving medical treatment as the attack unfolded. He died from multiple injuries, police say.
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