泰前部长宣布成立反军事政变组织

The first sign of organized opposition to Thailand's military coup has emerged, with an ex-government minister vowing to work with fellow dissidents to restore "democratic principles."

The formation of the Organization of Free Thais for Human Rights and Democracy was announced Tuesday in an open letter by Jarupong Ruangsuwan.

Jarupong was the head of the Pheu Thai party of Prime Minister Yingluck Shinawatra, who was ousted by a Constitutional Court ruling just before the military takeover in May.

He said the new campaign will help organize resistance, both inside and outside the country, to the military, which he said was undemocratic and trying to preserve its role in politics.

Acting foreign minister, Sihasak Phuangketkeow, dismissed the announcement, saying there was "only one legitimate government" in Thailand.

It is not clear where the group will be based or how it even will oppose the junta, which has cracked down harshly on any sign of protest against its takeover.