Methamphetamine discovered during a robbery investigation at a Stockton Springs motel last summer has led to drug trafficking charges against a Stockton Springs woman and a U.S. citizen living in Tijuana, Mexico, state officials say.

Tiffany Eastman, 27, of Stockton Springs and Dustin Campbell, 38, have both been charged with drug trafficking after a two-month-long investigation by the Maine Drug Enforcement Agency, the U.S. Postal Inspectors and the Waldo County Sheriff’s Office.

State Police spokesman Stephen McCausland said the investigation began when Eastman was arrested at the Rocky Ridge Motel in Stockton Springs during a robbery complaint. Eastman lived at the motel and about 66 grams of methamphetamine packaged for sale was there, he said.

According to the investigation, Campbell allegedly mailed Eastman 88 grams of methamphetamine – worth $18,000 on the street – from San Diego and she sent him a partial payment, and agreed to send the rest of the money after selling the drugs, McCausland said.

Officials arrested Campbell on October 28 as he tried to cross the border into the United States. He is being held at the San Diego Central Jail as a fugitive from justice related to the Maine charges, and he is fighting extradition to Maine, McCausland said.