An Arizona woman who bought, what turned out to be, counterfeit Phoenix Coyotes playoff tickets helped police nab the suspected scalper with a picture of his license plate.

Mari Alfaro discovered the tickets for sale on Craigslist, and after meeting up with the alleged scalper, Mario Cox, she bought them for $200. But, according to a report on KTVK-TV, Alfaro had a funny feeling about the transaction, so before Cox could drive off she snapped a photo of his license plate. See the video below.

“He tried to tell me his girlfriend won the tickets in a contest and was trying to push how real these tickets were,” Alfaro told KTVK-TV. Separately, she recently had bought Phoenix Suns playoff tickets off of Craigslist and had no problems.

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After being escorted out of Arena because the Coyotes tickets were fakes, Alfaro turned over the picture of the license plate to police, who made the arrest. A search of Cox’ home allegedly turned up other counterfeit print-at-home tickets, police said.