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NORRISTOWN, Pa. (CBSMiami/AP) — A Pennsylvania man has been found guilty of transporting $1 million in heroin in a hollowed-out battery from Atlanta to New York City.

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Authorities say 45-year-old David Pacheco smuggled the heroin in a hollowed-out car battery as part of a scheme that sent him on nine trafficking missions. He was convicted in a Montgomery County court on Thursday.

He says he made the smuggling runs because a powerful drug cartel in Mexico threatened members of his family.

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He was arrested in January 2016 with roughly 6 pounds of heroin worth about $1 million.

A lawyer for Pacheco says they plan to appeal the drug trafficking charges. Court records did not list a sentencing date.

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(© Copyright 2017 CBS Broadcasting Inc. All Rights Reserved. The Associated Press contributed to this report.)