A person was arrested in absentia on Tuesday by the Södertörn district court and arrested shortly after that by Spanish police in Barcelona. The person is suspected of trying to extort Joachim Kuylenstierna for SEK 100 million, reports Expressen.

"He is suspected of being the ringleader, i.e. of being behind this extortion," says prosecutor Anna Stråth to the newspaper.

Several people have previously been detained in connection to the case, writes Expressen.