Ethan Guo, 19, had been documenting his attempt to fly solo to all seven continents on social media. He is no longer in custody but has no easy way to leave an island off Antarctica’s coast.

Ethan Guo, a 19-year-old pilot from Memphis, Tennessee, was detained and charged with submitting a false flight plan before heading to the South Pole, according to the Public Prosecutor’s Office of the Magallanes and Chilean Antarctic Region.

A 19-year-old pilot from the United States has been detained on an Antarctic island and charged by Chilean authorities, who say his flight to the frozen continent was unauthorized.