NEW : State security ' says ' ` ` troubled '' by case outcome . Gordon was arrested in May for posting a link on his website to a banned book . Gordon 's guilty plea leads to his lenient sentence , his lawyer said . Bangkok , Thailand ( CNN ) -- The king has tried foreigners in similar cases in the past .
NEW : State security ' says ' ` ` troubled '' by case outcome . Gordon was arrested in May for posting a link on his website to a banned book . Gordon 's guilty plea leads to his lenient sentence , his lawyer said . The king has tried foreigners in similar cases in the past .