Three years ago, Chonticha "Lookkate" Jangrew and Piyarat "Toto" Chongthep were two of tens of thousands of youth protesters on the streets of Bangkok calling for a dissolution of parliament, a new constitution and reform of the monarchy.

Bangkok - Three Thai activists in exile and accused of insulting the country's powerful monarchy have gone missing, rights groups and a family member told AFP Saturday, as demands mount for answers on their whereabouts.