BOISE -- A Boise woman is facing charges after police say they found several bags of meth during a traffic stop.

The incident happened at Chinden Boulevard and 39th Street just after 2 a.m. Sunday, when an officer pulled over a car for failure to maintain its lane. Boise Police called a K-9 unit out to the stop, and the drug dog alerted on the vehicle, officers say.

Officers searched the vehicle and discovered the passenger, identified as 48-year-old Melissa Foldesi, of multiple baggies containing more than four grams of a white crystal substance.

Police say the crystals tested presumptive positive for methamphetamine.

Foldesi was arrested and booked into the Ada County Jail on a felony drug trafficking charge. She is due in court Oct. 31 for a preliminary hearing.