Ousted Thai leader Yingluck Shinawatra has appeared at a military facility in Bangkok, a day after the army took power in a coup.
Ms Yingluck is one of more than 100 political figures summoned by the army.
The army has banned 155 prominent political figures from leaving the country without permission.
On Thursday the military suspended the constitution, banned gatherings and detained politicians, saying order was needed after months of turmoil.
On Friday afternoon it appeared Ms Yingluck had left the location where she had been summoned and was going to another military location, the BBC’s Jonah Fisher reports from Bangkok.
It was not clear if she was still being detained, our correspondent says.
Some pro-government MPs have now gone into hiding.
The coup, which followed months of anti-government protests, has drawn widespread international criticism.
It came two days after the army declared martial law.
US Secretary of State John Kerry said there was “no justification” for the coup, adding that $10m (£6m) in bilateral aid could be suspended.