A teenager from west Wales has been charged with offences relating to international computer crimes, police have said.
Detectives said Daniel Mark Kelley stands accused of a denial of service (DoS) attack on a local college, two counts of blackmail and money laundering.
The 19-year-old, of Llanelli, Carmarthenshire, was charged at Belgravia Police Station in London on Thursday.
Dyfed Powys Police said Kelley was arrested following an investigation by the Tarian Regional Cyber Crime Unit.
And referring to the charges, a force spokesman added Kelley is alleged to have carried out a DoS attack on sixth-form college Coleg Sir Gar - which later affected submissions of coursework and the administration of examinations.
He also stands accused of blackmailing two people working for firms in Australia and Canada as well as money laundering.
Kelley has been bailed ahead of a court appearance at Westminster Magistrates' Court next month.