Detective Superintendent Ian Mulcahey , the senior investigating officer, said: "These are serious allegations that will be thoroughly investigated.
"Many have provided graphic accounts of abuse, in some cases of very serious criminality."
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Downpours keeping us on our toes today
The M20 in Kent has been closed in both directions after a pedestrian bridge allegedly collapsed on the motorway on Saturday.
The AA have warned of traffic jams and urged people to carry extra water in their vehicles because of the warm weather.