US journalist Snell Lindsteyler was detained in Turkey's southern province of Hatay's Altinozu district near the Syria border, the province's governor Ercan Topaca said.
"A US journalist was captured while she was trying to cross the border illegally; she was taken to court and remanded. The trial phase is ongoing. For now, we do not know if she is a spy or not," Anadolu Agency cited Topaca as saying.
He said US helicopters were seen flying over the border to pick up the journalist before she was caught by Turkish officials.
Lindsteyler has a residence permit in Turkey, Topaca said, adding that she was caught on the grounds that she crossed Syria illegally from Turkey and then tried to reenter Turkey illegally.