Jaritza Rodriguez could get up to 30 days in jail when she is sentenced next month following her conviction on the misdemeanor charge.
Rodriguez, 39, was arrested by Amherst police in October after she pretended to be an Amherst officer while trying to return packs of cigarettes her boyfriend had purchased from a Sunoco gas station.
The clerk reported that Rodriguez, who works for a private security company, threatened to arrest her when the clerk refused to take back the cigarettes.
The boyfriend, Peter Torres, contacted police after seeing news coverage of the incident. Police reported that Rodriguez herself called police moments later.
Police have said the badge Rodriguez flashed to the clerk was to identify her as a concealed carry permit holder.
Joe Medici, Rodriguez’s attorney, said his client would try to move on from the guilty verdict.