Authorities in the United States have reviewed airport security footage as they continue to investigate how a woman sneaked on board a Delta Air Lines flight from New York to Paris without a ticket last Tuesday –– one of the busiest travel days of the year.

Delta Air Lines recently witnessed a stowaway situation on their flight from New York to Paris. The incident took place last week when a woman flew to France without a ticket while spending most of the traveling time in the washroom. When she was set to return to the US, she caused a disturbance at the airport.

The woman boarded Delta Flight No. 264 from John F. Kennedy International Airport to Paris Charles de Gaulle Airport, CBS News learned. She was discovered while the plane was in midair and was taken into custody in Paris.