TSA investigating how a meat cleaver made it onto a plane in Oregon

The Transportation Security Administration is investigating how someone was able to bring a meat cleaver on a Delta Air Lines plane in Portland, Oregon Thursday.

"TSA is aware that a passenger departing Portland International Airport on Thursday passed through the security checkpoint with a meat cleaver in their carry-on bag," the agency said in a statement. "We take this matter very seriously."

The knife, usually used for chopping thick cuts of meat, bone or tough vegetables, was found only after the passenger made it onto the flight from Portland to Salt Lake City.

Delta Air Lines staff reported the "hazardous item" to TSA, which notified police, the Port of Portland told CNN. No one was arrested and TSA and Delta "handled things from there," the port spokesperson said.

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