According to that article:
Gardai from the force's computer crimes unit quickly traced the hacker to Latvia but it is only in recent weeks that the Director of Public Prosecutions (DPP) has ordered the suspect to be extradited. The DPP has directed that there is enough evidence to secure a conviction...Background on the attack on Boards.ie: 1|2.
Legal sources said it may be possible for the boards.ie suspect to be charged with theft or fraud: some of the passwords obtained in the hack appear to have been used to steal money from people's Paypal accounts... The hacker is suspected of downloading a number of databases to order.