MCKEES ROCKS (KDKA) — A mother from McKees Rocks is facing charges after police say her 3-year-old son ate a piece of drug-laced candy.

According to the criminal complaint, Darlena Johnson’s 3-year-old son ended up in UPMC Children’s Hospital emergency room last month. He was twitching and lethargic.

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Photo Credit: Allegheny County

Police said the hospital staff performed a urine test on the boy that “showed positive results for THC,” a compound found in marijuana.

It was at that time, police say, that Johnson told the doctors that the boy had eaten a “THC gummy worm that she had purchased from a gas station.”

Police say Johnson then became “hostile and uncooperative with the hospital staff,” calling the gummy worms “candy” and refusing to allow the staff to further examine her son.

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The criminal complaint reports that when the hospital workers recommended she keep the drug-laced gummy worms in a lockbox, she told them, “I don’t need a lock box because I don’t have any more edibles.”

Investigators say a comprehensive drug screening on the boy eventually showed he also had “traces of cocaine and cocaine metabolite” in his system.

Police say Johnson told a Child, Youth and Family services case worker that she had not brought the gummy worms from a gas station; but instead, she “purchased it off the street.”

Johnson, 29, is facing endangering the welfare of children charges.

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She posted bail. Her preliminary hearing is scheduled for Feb. 18.