'Lost' video evidence shows girl describing abuse

A police interview video shows seven-year-old Michaela Allen describing how her babysitter abused her at home.

She says the man asked her to give him "grown up kisses" and that she refused, after which the man threatened to tell her parents she was not behaving.

Police never charged the man and lost vital evidence.

South Wales Police and Gwent Police have both apologised for failures and said they took all reports of sexual assault seriously.