It’s the highest-profile lese-majeste case yet since a wave of anti-government protests took hold last year.
Thailand's royal insult laws are some of the toughest in the world.
Experts say the powerful monarch is taking a friendlier approach in the wake of unprecedented pro-democracy demonstrations.
The elusive monarch has been much less elusive in recent weeks as pro-democracy protesters call for reforms to the powerful institution.
The doorstop interview was unprecedented as pro-democracy protesters call for the monarchy's powers to be reduced.
The powerful Thai king lives most of the year in Germany, but for the first time his life there is coming under public scrutiny back home.
Pro-democracy demonstrators have defied bans on large gatherings as protests continue.
While locals mourn the loss of their king, tourists are mourning the loss of their booze-fueled vacation.
Lèse majesté sentences have become harsher under military rule, with record sentences of up to 30 years being handed down by military courts.