A rights group says three Thai citizens who were accused of insulting the king have disappeared.
Thai Alliance for Human Rights claims there’s no sign of the trio after they were arrested in Vietnam.
However Prawit Wongsuwan, Thailand’s deputy prime minister, denies the activists were in Thai custody.
The incident comes months after two exiled critics of the monarchy were found dead.
Last week Thailand crowned its new king, Maha Vajiralongkorn, in an elaborate ceremony at the Grand Palace in Bangkok.
Israel's Netanyahu says military to increase pressure on Hamas
Russia and Ukraine accuse each other of breaking one-day Easter ceasefire
Russia declares unilateral Easter ceasefire in Ukraine
Hamas armed wing says fate of Israeli-American hostage unknown
Iran, US begin second round of talks in bid to reach nuclear deal
