Lostprophets frontman Ian Watkins has also been charged with the possession and or distribution of indecent images of children.
Detective Inspector Peter Doyle, of South Wales Police, has urged "anyone who has any concerns or information which they think may be relevant to contact us."
He added: "Safeguarding children involved in such cases is always a high priority and as such measures have already been taken."
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A weather warning is also in place for Scotland, which could see "treacherous" and blizzard-like conditions on Thursday.
The lorry lost several butane gas canisters as the driver rammed into cars in a dangerous escape attempt that was ended by police gunfire.
The Gambling Commission said: "Integrity in sport is not a joke and we have opened an investigation to establish exactly what happened."