A Russian woman who stowed away on a flight from New York to Paris last week was able to sneak through the security checkpoint by starting off in a lane reserved for airline flight crews, according to the Transportation Security Administration.

A TSA spokesperson tells CNN the 57-year-old woman first bypassed an airport terminal employee in charge of the line for the Known Crewmember checkpoint at John F. Kennedy International Airport’s terminal 4 main checkpoint. She then joined the line for standard TSA screening. It was at that point that the woman bypassed stations where her ID and boarding pass would have been checked, the spokesperson said.

This is the most detailed account yet of how she was able to elude security checks and make her way onto the flight.

Once the woman proceeded to the gate, she placed herself in the middle of what appeared to be a family traveling together, according to a senior law enforcement official briefed on the investigation.