Families in St Helens and Warrington can use the monitors to check for air pollution in their homes. Brianna Ghey's mum says she wants to "get answers" from social media companies about safety.
Despite Nasen Saadi claiming he had not killed Amie Gray, he could not explain his whereabouts at the time of her murder ...
Jack the Ripper was a serial killer who murdered five women but he was never caught for his crimes - here are his victims.