Police have caught the local who had been attempting to use counterfeit money around town.
Far North Police on Monday arrested a man over the two recent incidents of counterfeit notes being passed at Port Augusta.
A counterfeit $50 note was passed at a business on Louden Road and a second incident occurred at a business on Carlton Parade during August.
After investigating, police arrested a 28-year-old man from Port Augusta on Friday over both incidents.
He was charged with deception, along with other outstanding matters and refused police bail.
Police urge the public and particularly businesses to be vigilant when receiving cash and urge staff to take the time to inspect any money to ensure it is legitimate.
To determine if a suspect note is counterfeit, it is best to compare it with a note that is known to be genuine.
Should a business receive a counterfeit bank note, police advise to secure and contact them on 131 444.