A few weeks earlier the Polish Embassy in Stockholm received a letter signed "Sven-Roland Larsson" with a series of classified military information and a request for SEK 25,000 ($3,400) in exchange for further information.
Några veckor tidigare hade den polska ambassaden i Stockholm fått ett brev undertecknat "Sven-Roland Larsson" med en rad hemliga uppgifter och en begäran om 25 000 kronor, om man ville ha mer hemligheter.