Eyewitness News (Chipley, Florida) --
Several panhandle law enforcement agencies are chasing a string of counterfeit bills that have surfaced in Chipley and DeFuniak Springs.
Authorities say most of the bills are 20s and 100s being used at gas stations and fast food restaurants, and they are becoming more difficult to spot.
At first glance, it may be hard to tell which 100-dollar bill is real and which is not. Both the counterfeit and the real money have fibers in it.
You may come across them once a week or monthly, it just depends on if someones actually making the bills in the area and passing them.
One such counterfeit 100 dollar bill counterfeit was used at a Burger King near I-10.
The local Habitat for Humanity store also received a counterfeit 100.
DeFuniak Springs Police say they have also seen a number of counterfeit 20s with the same serial numbers.
Authorities can sometimes use the serial number to track its origin. Other clues for detecting counterfeit bills include quality of paper and the seal.
"Maybe the lines don't match up properly on the money, some of the ink has run (off)."
Some stories use a counterfeit detecting pen, but it's getting trickier.
"They've changed the features of the money where it's harder for the counterfeit people to make copies of it, you can mark the bill and then it shows that it is counterfeit but if it was made back in the 50s and 60s, it may show that it's counterfeit and in fact it's not."
If you are unsure about any bill you receive, experts recommend you contact your local bank or law enforcement agency.