Filipovic had traveled from Newark, New Jersey, to Dublin, Ireland, over the weekend and had just this morning opened her luggage. She said that except for when the bag was checked — from the time she packed to the time she unpacked — she had been with the bag, meaning it was unlikely an elaborate practical prank by a friend. She said the fact that the note was left on the TSA notice led her to believe a TSA officer had written it.

A spokesperson for the TSA said that they are “one of several entities” that handle checked bags and that at this time there is “no concrete evidence who wrote the note.”

Still, the TSA said that “if inappropriate conduct is discovered, TSA [will take] appropriate disciplinary action.”