Dutch authorities have joined the FBI in conducting criminal investigations into the discovery of needles in six sandwiches aboard four Delta Air Lines flights from Amsterdam to the United States, a military police spokesman in the Netherlands said Tuesday.

One person was injured when he bit into a sandwich containing a needle, Delta and Dutch officials said.
That passenger, James Tonjes, said he thought the object was a toothpick at first.
"When I pulled it out, then I found out it was a needle," he said Tuesday.
Tonjes said he has been placed on medication to prevent HIV.

One of these needle planes landed in Seattle. One needle, which punctured the roof of a passenger's mouth, was described as a sewing needle without an eye. The needle sandwiches were made in the Netherlands.