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
It became a defining moment for race relations in Britain - but 25 years on from Lawrence's murder, can more still be done?
Albert Thompson was initially denied vital radiotherapy for his prostate cancer unless he could produce the right documentation.
ITV News travels to Jordan to report on the growing global threat of the spread of deadly drug-resistant 'super bugs'.