Sept. 3 (UPI) -- Federal officials reminded the American public on Wednesday that it's not a crime to carry more than $10,000 on your person -- but is a federal offense if it's not reported when entering the United States or leaving.

Some border crossers recently have learned this lesson the hard way after having tens of thousands of dollars confiscated, federal officials said.

The public warning by U.S. Customs and Border Protection on declared currency was issued after two different people on two separate occasions were found by border agents to each be carrying in bulk tens of thousands of dollars in undeclared U.S. currency totaling more than $107,000.

"Seizures of unreported bulk currency often are proceeds from illicit activity so seizures like these help advance CBP's border security mission," Tater Ortiz, the director of the Brownsville Port of Entry in Texas, said in a statement.

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