The FBI is investigating the findings of what looks like sewing needles in turkey sandwiches on Delta Air Lines flights from Amsterdam to the United States.

The airline reported that the needles were discovered in five sandwiches on Sunday. According to Delta spokeswoman Kristin Baur, a passenger on the Minneapolis flight was injured. Needles were also found on two flights to Atlanta and one headed to Seattle.

Jim Tonjes of Plymouth, Minn. Told the Minneapolis Star Tribune that while eating his sandwich, he felt a sharp poke in his mouth. He initially was not concerned as he assumed it was a toothpick, but instead pulled out a 1-inch needle that pricked the roof of his mouth.

Tonjes was brought in to speak with the FBI and was sent to an emergency room.

Other passengers such as Jack Drogt also told the newspaper that he found sewing needles in him and his son's sandwiches on the Minneapolis flight also.

The FBI will analyze the needles discovered within the sandwiches to find out where they were created.

The sandwiches were made in Amsterdam by catering company Gate Gourmet and were found by business class passengers on Delta flights.

The Transportation Security Administration is continuously keeping an eye out on the situation and immediately warned U.S. carriers with flights from Amsterdam's Schiphol Airport.

In a written statement, Delta airlines wrote, "Delta is taking this matter extremely seriously and is cooperating with local and federal authorities who are investigating the incident. Delta has taken immediate action with our in-flight caterer at Amsterdam to ensure the safety and quality of the food we provide onboard our aircraft."