A flight attendant ultimately discovered the stowaway, whose identity has not been publicized, while the Nov. 26 flight from John F. Kennedy International Airport to Paris Charles de Gaulle Airport was midair. She was found after making frequent, long visits to the plane’s bathrooms, sources close to the situation told CNN and CBS News.

TSA and Delta are investigating how the woman managed to sneak onto a flight without a ticket. CBS News New York's Elijah Westbrook has the details.