Exchange rates of cryptocurrencies in Seoul
Exchange rates of cryptocurrencies at an exchange office in Seoul, South Korea, on December 20, 2017.
  • A Spanish man faces 20 years in prison for teaching North Korea cryptocurrency, according to police.
  • Alejandro Cao de Benós is wanted by the FBI for helping North Korea evade US sanctions.
  • He was arrested at a Madrid train station last week, Spanish police said.

A Spanish man is facing 20 years in prison in the US for teaching North Koreans how to evade US sanctions using cryptocurrencies, according to Spain's National Police.

Alejandro Cao de Benós was arrested last Friday at a Madrid train station after Interpol alerted Spanish authorities of his possible presence on Spanish soil, per the police statement.