Protesters will test Thai coup leader General Prayuth Chan-ocha this weekend after he said there would be no elections in Thailand for more than a year to give the military time to engineer reforms.
Former Prime Minister Yingluck Shinawatra was in a "safe place" on Saturday, an aide said, after being held by Thailand's army following its seizure of power this week, as opposition to the coup grew among her supporters and pro-democracy activists.
The US has suspended about $3.5 million in military assistance to Thailand following a coup, the State Department said Friday.
"It must come to an end. Whether it will be a happy ending depends on the great mass of people in this country and our state officials."
Senator Wanchai Sornsiri urged acting Senate Speaker Surachai Liangboonlertchai to contact Thaksin Shinawatra.