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In June 2021 the family were removed from the child protection register - meaning it was believed there was no longer a risk of significant harm.
Social workers visited Logan's house the day before he died, and took no action in May 2021 when he burned his neck on a hot bath tap. Social services had also been aware that Cole had a criminal record for violence.
July 30: Williamson allegedly lifts Logan up forcefully by his pyjama top, causing it to rip, and shouts at him to 'tell the truth'. The same day, social worker Deborah Williams visits the flat but is denied entry, as Logan has Covid-19. She stays for 20 minutes and leaves without seeing or hearing Logan.
July 31: CCTV shows Cole carrying Logan's body out of the flat and towards the river, while being followed by Mulligan. They return to the property but leave again to dispose of Logan's ripped pyjama top. At about 5.45am Williamson makes a 999 call to police, claiming to have woken to find Logan missing from the house, and accusing another woman of having taken him.
The boy's killing has chilling echoes of the tragic death of six-year-old Arthur Labinjo-Hughes, who suffered a similar terrible fate when his life was put in similar danger after the country went into lockdown.
Craig Mulligan moved into the house with Cole and his stepmother Angharad Williams after previously having been under the care of foster parents.
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