Washington (CNN) - The FBI says it has launched an investigation into the discovery of sewing needles in four turkey sandwiches on separate Delta Air Lines flights from Amsterdam to the United States.
The objects were discovered in food on planes as they were en route from Schiphol Airport in the Netherlands to Minneapolis, Seattle and two flights to Atlanta, according to Delta spokeswoman Kristin Baur. Two of the needles were found by passengers, she said, at which point Delta told all 18 flights from Amsterdam to stop serving the sandwiches.
Two more needles were discovered, including one found by a federal air marshal. One passenger on the plane going to Minneapolis was injured by the needle but declined medical treatment upon landing, according to Baur.
Federal agents have begun a criminal investigation, said Special Agent Stephen Emmett, an FBI spokesman in Atlanta.
Gate Gourmet, which provided prepared sandwiches to Delta, said the sandwiches originated at the firm's facility in Amsterdam. The company has been in business since 1992.
This morning on "Early Start," CNN's Sandra Endo reports on the latest in the investigation.