Sewing needles were found in at least five turkey sandwiches, according to the Associated Press.
Delta spokeswoman Kristin Baur said that the airline immediately stopped serving the sandwiches when the problem came to light, and messages were sent out to other flights from Amsterdam.
Passengers were reportedly served pizza instead and the airline is serving more pre-packed food until the situation is resolved.
More top news
Special 'baby boxes' allowing mothers to give away unwanted babies safely have been installed at fire stations in Indiana, USA.
A motorcyclist has died after a chase involving a UK-registered car ended in a police shoot-out and pile-up on a busy motorway near Dunkirk.
Leicester City manager Claudio Ranieri is confident of keeping his star names at the King Power Stadium next season.