A news site in Morocco - the country of origin of one of the arrested suspects - reports the following:

The arrest of the eighteen year-old hacker occurred upon the request of FBI, which traced virus back to a website in Morocco, DGSN said.

According to primary investigation, the hacker had accomplices in Turkey, the motive was financial, and he acted in connivance with groups specialised in bankcards forgery. (Maghreb Arabe Presse)