SKOWHEGAN — A Cornville woman was being held in jail Thursday on drug trafficking charges after police said they found illegal drugs hidden in a coffee tumbler during a traffic stop, officials said.

Jessica Salisbury, 48, was arrested Wednesday on two Class A counts of aggravated trafficking in schedule W drugs, the Maine Drug Enforcement Agency said in a statement issued Thursday.

Skowhegan police officers stopped Salisbury’s vehicle as part of joint investigation with the Drug Enforcement Agency. Salisbury was described as a “target” of the investigation.

A Skowhegan police dog alerted the possible presence of drugs, and police searched the vehicle.

Inside a coffee tumbler that had a “false bottom,” police said they found 10.9 grams of suspected cocaine hydrochloride, 20.98 grams of suspected cocaine base and 13.86 grams of suspected methamphetamine.

The drugs were hidden in a 3.5-inch-tall portion of the 10-inch mug.

Salisbury was also charged with one felony-level Class C count of violation of conditions of release, as she was on two separate sets of bail conditions, the Drug Enforcement Agency said.

She was being held at the Somerset County Jail in Madison, records show.

Bail was set for the drug trafficking charges at $50,000 cash, police said. But Salisbury was being held with no bail allowed due to the violation of condition of release charge, pending an initial court appearance Friday in Skowhegan.