U.S. Customs and Border Protection officials say $150,000 in counterfeit money was discovered inside a passenger's bag at JFK airport last month.
Investigators say the phony cash belonged to a woman who was returning from Colombia.
Officials say they were tipped off by the smell of glue and later discovered the bags had been altered to hide the money.
A total of 1,500 $100 bills were discovered.
The woman has been arrested, charges have not yet been announced.