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.

The stowaway who boarded a flight in New York and made it all the way to Paris on Tuesday was removed from her return flight to the U.S. after she caused a disturbance, a source said Sunday. A source with knowledge of the situation said the woman "created a disturbance" as the Delta flight was set to return to New York.

A passenger went through security screening but avoided identity and boarding pass checks before flying out of the United States, a T.S.A. representative said.