WILLIAMSPORT, Pa. (AP) – A Pennsylvania woman is facing charges that she sold food stamps for heroin, after she tried to sell the food stamps online for cash.

Lycoming County authorities filed charges this week against 37-year-old Tanya Keenan-Mack. Court records show Keenan-Mack is in jail stemming from an unrelated probation violation in a forgery case.

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The state inspector general’s office says Keenan-Mack exchanged $194 in food stamps on an electronic benefits card for heroin, and that the card was used at a Weis Markets and a Walmart last month.

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The office says it began investigating after receiving a tip Feb. 6 that Keenan-Mack had posted an ad on Facebook’s “Williamsport New and Used, Buy and Sell” page, offering $194 in food stamps for $100.

A public defender for Keenan-Mack didn’t immediately return a call seeking comment.

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