A bank in Clemmons is investigating how a counterfeit $100 bill slipped through internal security and wound up as part of a customer's withdrawal.

Dee Grimes often cashes her paycheck at Southern Community Bank in Clemmons. On Monday, she cashed her check and drove to BB&T in Hillsdale to deposit the money into another account.

According to Grimes, officials at BB&T told her one of the $100 bills was counterfeit.

"I was like.. are you kidding me? I just came right from that bank to make a deposit," said Grimes.

Grimes said BB&T notified Southern Community and the bank immediately started investigating. The bank's investigation found Grimes' claim to be true and she will be given a $100 credit.

"If it's good enough to fool someone at the bank, what does that say bout everyone else," said Grimes.

Over the last several weeks, police found similar counterfeit bills at Lowes Foods and McDonalds in Clemmons. Since February, 19 counterfeit bills have been reported in Forsyth County.

"It's throughout the county. We aren't just singling out Clemmons. Things are happening everywhere," said Major Brad Stanley of the Forysth County Sheriff's Office.

Stanley said finding the origin of the fake money is often tough.

"If there is information for us to follow, we definitely will do that. But so many times, there are not many leads to investigate," said Major Stanley.