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SWISSVALE, Pennsylvania (WPXI) -- A 26-year-old Pennsylvania oman was arrested Wednesday after police said undercover agents purchased heroin from the her while she was working at an East Liberty McDonald's.

According to Mike Manko, a spokesman for Allegheny County District Attorney, several law enforcement officers set up a controlled buy at the restaurant Wednesday.

Investigators said customers looking for heroin were told to go through the drive-through and say "I'd like to order a toy."

The customer would then be told to drive to the first window, where they'd hand over their money and get a Happy Meal box containing heroin in exchange.

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