(ABC NEWS) One of the airline passengers who bit into a sandwich containing a one-inch needle earlier this week has now been put on antiretroviral drugs used for the treatment of HIV, and says the FBI is investigating the incidents aboard four Delta Air Lines flights as a criminal case.

James Tonges said he was placed on the drug Truvada, which has recently been approved by the FDA, following the incident aboard a Delta flight from Amsterdam to Minneapolis-St. Paul. Half a dozen sewing needles have now been found in sandwiches on four separate Delta flights, and Tonges, who was sitting in his flight’s business elite cabin, was unfortunate to have bitten into one of them.

“It was on the second bite into the sandwich, it actually poked the top of my mouth. It was about one inch long, straight needle,” Tonges told “Good Morning America.” “Since it punctured the top of my mouth, I had to be put on medication, and we’re waiting to see if there’s any type of substance on the needle. They’re doing their examination right now.”

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