TSA: Air passenger tried to disguise knife as a credit card

The Transportation Security Administration said Wednesday that a passenger was caught trying to smuggle a knife that was designed to look like a credit card through airport security. 

The TSA said the incident happened Tuesday morning at Liberty International Airport in Newark, N.J. The agency said the knife was discovered by a TSA employee on one of the agency's controversial X-ray machines, which some critics have said emit enough radiation to possibly cause cancer.

TSA has defended the X-ray machines are being safe, and Wednesday, the agency said it helped them catch a concealed weapon.

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"The credit card knife was sandwiched between several real credit cards in the passenger's wallet, and placed in a carry-on during one of the busiest travel weeks of the year," the agency said in a statement that was provided to The Hill.  

"Thanks to their training, effective technology, and on-the-job focus, the TSA Officers were able to detect this item without any impact to airport operations," the TSA statement continued.