The bills have been received in the following denominations: $1, $5, $10 and $20. The majority have been in $10 and $20 denominations.
The police department is investigating the incidents and reminds business owners and the public to be diligent in monitoring currency they receive.
The U.S. Secret Service website provides information to help people determine whether currency they receive is real or counterfeit at www.secretservice.gov/data/KnowYourMoneyApril08.pdf.
Anyone with information about the crimes is asked to call Paso Robles police or Crime Stoppers at 549-STOP (549-7867), or to submit a tip at the Crime Stoppers website at www.slotips.org. People may also send a text to “CRIMES” or 274637. Tipsters may remain anonymous, according to police.
Crime Stoppers will pay a cash reward of up to $1,000 for information leading to the arrest and conviction.