Authorities report men were passing $100 fake bills at Tanger Outlets in Commerce that aren't detected by the pen mark test.

Police say a counterfeit pen test shouldn't be the only tool used to detect a fake bill, a black light can also be used but also isn't definitive. HOW TO KNOW A BILL IS REAL: PAY ATTENTION TO DETAIL ...

Police say a counterfeit pen test shouldn't be the only tool used to detect a fake bill, a black light can also be used but also isn't definitive. HOW TO KNOW A BILL IS REAL: PAY ATTENTION TO DETAIL ...

Police say a counterfeit pen test shouldn't be the only tool used to detect a fake bill, a black light can also be used but also isn't definitive. HOW TO KNOW A BILL IS REAL: PAY ATTENTION TO DETAIL ...

Cleburne police warn counterfeit bills have been passed at local retailers and restaurants, and the concern this year is a spike in "washed" notes. Here's how to know if your cash is counterfeit.