Thailand's ousted Prime Minister Yinluck Shinawatra and more than one-hundred other political figures made an appearance for questioning at a military facility in Bangkok Friday on the army's request.
There was no immediate word on what Yingluck or the others were asked about.
It comes after the Thai military suspended most of the constitution and imposed a travel ban on 155 politicians after announcing a military coup d'etat on Thursday.
They say the goal is to end the ongoing political turmoil in the country, but world leaders have been quick to condemn the move.
It came just two days after the army's sudden declaration of martial law Tuesday, PLUS their earlier denial of a possible coup.
U.S. Secretary of State John Kerry said there was "no justification" for the coup, and warned of negative consequences.
"At this point what we are doing is we are reviewing our military and other assistance to the government of Thailand. We've taken preliminary steps to suspend military engagement and assistance while we consider the facts on the ground."
United Nations Secretary-General Ban Ki-moon voiced deep concern over the threat to the human rights of the Thai people and appealed for a prompt return to constitutional and democratic rule, as well as "all-inclusive dialogue."
The so-far bloodless coup includes a nationwide curfew of 10 p.m. to 5 a.m. and soldiers have dispersed demonstrators at two main protest sites.
Government programming is filling the airwaves, and international news channels are blocked.
Korea's foreign ministry raised its level 1 travel advisory that was in effect for much of Thailand to a level 2 on Friday, meaning travelers should take caution when traveling to or within the country.
Kwon Soa, Arirang News.