Channel 2 Action News has confirmed Delta Air Lines is enhancing security at all its catering facilities around the world.

The move follows the discovery of sewing needles in several sandwiches. The needles turned up on flights from Amsterdam to Atlanta, Minneapolis and Seattle.

Air safety experts told Channel 2 investigative reporter Aaron Diamant it all comes down to access.

U.S. and Dutch investigators are now searching for gaps in Gate Gourmet's facility in Amsterdam that let the needles into those sandwiches.

Diamant confirmed FBI agents are now working in the U.S. and alongside counterparts in the Netherlands to figure out how a half dozen sewing needles ended up in turkey sandwiches aboard Delta Airlines flights from Amsterdam to three American cities Sunday, including Atlanta.

"You can't check every sandwich that goes aboard a plane. This demonstrates to people who want to do bad things this is a gaping hole," former FBI agent Brad Garrett said.

One needle injured a Minneapolis-bound passenger who is now on powerful meds.

The sandwiches came from airline catering giant Gate Gourmet's Schipol airport facility.

On Tuesday a Delta spokesperson in Atlanta told Diamant, "We've implemented heightened security at [Gate Gourmet's] facility in cooperation with them."

Last November Channel 2 Action News first exposed what air safety experts called an ongoing security breach at Gate Gourmet's Atlanta airport operation.

A whistleblower shot video showing how easy it is to add unauthorized items, including food onto unsealed catering carts after they were inspected, even though federal law states all catering carts must be sealed for easy visual detection of tampering.

"It's intolerable, absolutely intolerable. The American people deserve better than this," Rep. Paul Broun, (R) Athens.

Broun was one of several lawmakers who demanded congressional hearings on airline catering safety.

Diamant spent a good part of the day Tuesday on the phone with staff members for several of the lawmakers involved in those hearings.

All of them told Diamant their bosses are watching the investigation into the needles very closely, but didn't want to weigh in until after the FBI figures out where they came from.

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