The transfers took place after officials were told of the $80m fraud, the secret files reveal.
The warning comes as people in England who refuse an order to self-isolate could be fined up to £10,000.
People reported queues for attractions and traffic was gridlocked in Blackpool on Saturday.
The suspect, in her 20s, is released under investigation as police warn dog owners to be "vigilant".
The Labour leader tells the BBC testing problems make further Covid-19 restrictions "more likely".