A man without a passport or a plane ticket managed to board a Scandinavian Airlines flight in Copenhagen, Denmark, last month and arrive, undetected, in Los Angeles, California, before being discovered and detained, and later indicted.

The man, Sergey Vladimirovich Ochigava, talked with federal officials, with the assistance of a Russian-speaking federal agent on Nov. 5, one day after his flight arrived in Los Angeles, according to The New York Times.

His story raised more questions than it answered, as he claimed that he hadn’t slept in three days, that he “did not remember how he got on the plane” and “would not explain how or when he got to Copenhagen, or what he was doing there,” according to an FBI affidavit.