"The military's effective seizure of power and imposition of martial law across the country puts the rights of all Thais in jeopardy," said Brad Adams, Asia director at Human Rights Watch.
Army Commander-in-Chief General Prayuth Chan-ocha declared martial law early Tuesday in what he said was a bid to stem further protest-related violence and to help resolve the country's political stalemate that has dragged on for six months.
"Press freedom has been the first casualty, but Thailand's friends around the world need to speak out to prevent the assault on other basic rights," Adams said.
DPA