Police in Yorkton, Sask., have charged a woman with trafficking after seizing a half a litre of methadone at the local bus depot.

The 31-year-old was arrested Thursday after a package arrived and she allegedly showed up at the station to get it.

Seized were five 100-millilitre bottles of the drug, worth about $500.

Methadone is used medically to help wean addicts off other drugs, such as heroin.

According to the RCMP, it can be obtained only through a prescription, but there's been an illegal trade of the drug in the area.

In the past year, there have been three fatal overdoes involving methadone in the Yorkton and Kamsack areas.

Police said later they obtained a search warrant and searched her home, where they found further evidence of the drug.

They also found some pepper spray at the home. The woman was also charged with possession of a prohibited weapon.

She's scheduled to appear in court on May 14.