PUNTA ARENAS, Chile (AP) — An American social media influencer who was stuck in a Chilean airbase in Antarctica for two months and initially charged for submitting a false flight plan, on Saturday returned to the mainland.

Ethan Guo, who was 19 years old when he began his fundraising mission for cancer research, was attempting to become the youngest person to fly solo to all seven continents.

But he was briefly detained after Chilean authorities said he lied to officials by providing authorities with “false flight plan data.” Prosecutors said he had been authorized to only fly over Punta Arenas in southern Chile, but that he kept going south, heading for Antarctica in his Cessna 182Q — a single-engine light aircraft known for its versatility.

Authorities said that they authorized him to

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