A Portsmouth couple has been arrested on drug charges in Lewis County, Ky., as authorities continue investigating.

Danita Frazee, 33, and Charles Sprague, 37, are charged with first-degree trafficking in a controlled substance, second- degree trafficking in a controlled substance, with additional charges anticipated as the investigation continues.

Lewis County Sheriff Bill Lewis said his department made the arrests after the couple sold OxyContin and Loricets to law enforcement during an undercover operation.

Lewis County Sheriff's Department received a tip a drug transaction was going to take place in the Firebrick community, so deputies set up surveillance of the area and observed the transaction as it took place.

Frazee and Sprague were, according to Lewis County deputies, observed selling OxyContin 20-milligram pills and Loricet pills from their vehicle.

Lewis said after the transaction was complete, Frazee and Sprague were taken into custody without incident.

Seized, at the time of the arrests, were $523 in cash, a 2002 Pontiac Aztec, and prescription medication.

Frazee and Sprague were lodged in Lewis County Detention Center.

"We do undercover operations, and we're really on top of it all," Lewis said. "These boys (deputies) are trained, and they have good equipment. We're a small agency, but I'm very proud of all these boys."

Lewis said when drug dealers come into Lewis County, they need to know his staff is trained, and determined to put away anyone involved in the sale of illegal drugs and other substances.