Police in Louisville and other law enforcement officials are investigating after the arrest of a man who was found with more than $2,000 in fake currency.

Responding to a report of a potential overdose Thursday afternoon at a Speedway gas station next to Westport Village in east Louisville, Graymoor-Devondale police officers found Braxton Graven, 31, nonresponsive inside a vehicle with drug paraphernalia and a large amount of counterfeit currency in clear view, according to an arrest citation.

Graven was woken up and arrested after the vehicle was searched. He was charged with heroin possession, possession of drug paraphernalia and criminal possession of a forged instrument, court records show. The arrest citation said he admitted to investigators, including Secret Service agents, that he knew the money was counterfeit.

Around $2,300 in fake bills was found in the truck, Graymoor-Devondale Police Detective Steven Presley said.

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"Counterfeit money is out there, and it's out there everywhere," said Presley, who worked in Louisville Metro Police Department's fraud unit for several years. "Almost every convenience store in town gets a little throughout the year."

Presley said he called Secret Service once he saw the amount of counterfeit bills officers were dealing with, and Graymoor-Devondale police worked alongside the agents. Secret Service is continuing its investigation, he said, and will determine whether to present the case to the assistant U.S. attorney for prosecution.

The counterfeit money seized included fake $1, $5, $10 and $20 bills, Presley said. Some of the bills weren't exact copies, he said, but many looked realistic enough to be used.

"You take it to a clerk in a store or something, they very easily could be passed as authentic," Presley said.

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Lucas Aulbach can be reached at laulbach@courier-journal.com, 502-582-4649 or on Twitter @LucasAulbachCJ. Support strong local journalism and subscribe: www.courier-journal.com/lucasa.