(Minneapolis, MN) -- A Cup Foods employee is testifying in the murder trial of the former Minneapolis police officer accused of killing George Floyd. Christopher Martin is the 19-year-old employee of the store that took the 20-dollar bill believed to be counterfeit from Floyd. He testified that he believed Floyd was under the influence of something, but he could still hold a coherent conversation with Floyd. Martin took the 20-dollar bill and closed the cigarettes purchase, but he believed the bill he was given was fake. The reported counterfeit bill is what led police to be called on Floyd, which ended in Derek Chauvin putting his knee on Floyd's neck, his eventual death, and the ongoing murder trial.