A 17-year-old man has been arrested in relation to allegations of computer hacking and extortion.
The offences are alleged to have been committed when the man was still a juvenile earlier in the year.
Police say he obtained passwords and then hacked facebook accounts, pretending to be the person, sending sexualised messages and images.
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Those images were later attempted to be used against victims unless money was paid.
The man will be dealt with under the provisions of the Youth Justice Act in relation to a number of charges including indecent treatment of a child and possessing child exploitation material..