A traffic stop in South Portland Monday resulted in a Portland woman being charged with aggravated trafficking of heroin.

Myra A. Gonyer, 37, of Park Avenue was initially stopped Monday by South Portland police on Main Street and given a field sobriety test, according to South Portland police and the Maine Drug Enforcement Agency.

During the test, Gonyer showed signs of an opiate overdose and was taken to the hospital, said MDEA District Commander Scott Pelletier.

Officers found enough heroin in her possession to charge her with aggravated trafficking. Pelletier did not know the amount seized but said that under the law, elevation to an aggravated level requires either a prior trafficking charge or possession of 6 grams or more of the substance.

The case was referred to the MDEA for further investigation and review, South Portland police Lt. Todd Bernard said.

After being treated, Gonyer was booked Wednesday at Cumberland County Jail and later released on $25,000 cash bail.

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