A Pittsburgh McDonald's employee sold heroin in Happy Meal boxes to customers who used the code phrase, "I'd like to order a toy," according to police.

Undercover officers from a local narcotics enforcement team made a buy from the accused employee after being tipped off by an informant, according to the Pittsburgh Post-Gazette.

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Customers more in the mood for hard drugs than hot fries were allegedly instructed to order their "toys" at the drive-through, then collect their narcotics at the drive-through's first window. The accused employee is 26-year-old Shantia Dennis of East Pittsburgh. The McDonald's in question is reportedly located at 6361 Penn Ave. in the East Liberty neighborhood.

This Google Street View screenshot shows the McDonald's (at right) is apparently located across from a Trader Joe's (just to the left of the frame) in a nondescript strip mall:

Both McDonald's and the Allegheny County District Attorney's Office did not immediately return Mashable's requests for comment.

DA spokesman Mike Manko told the Post-Gazette that undercover officers bought 10 bags of heroin in stamp-sized packets from Dennis and found another 50 bags on her person after making the buy.

Authorities have not yet said how long heroin had been available at the McDonald's.