The 17-year-old male arrested after two girls were stabbed is believed to be their brother.
One of the victims is thought to be aged 16 and police now believe the other victim is 10-years-old.
A woman in her 40's was also stabbed. The condition of the three is said to be 'serious'.
A baby discovered at the house was unharmed.
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Detectives have released a photograph of a man they want to speak to after a woman was robbed at a cemetery in Nottingham.
Inquests have been opened into the deaths of seven people from the Midlands killed in the Tunisia terror attacks.
Thousands of people across the Midlands stood still at noon today to remember those killed in the Tunisian terror attack.