Lake County Sheriff's officials said Monday they confiscated over seven pounds of methamphetamine — the most seized in the county at one time — following a traffic stop Friday on Highway 29 in Middletown.

Three Santa Rosa residents were arrested in connection with the drugs: Rosa Elvia Carrillo-Salas, 24, Artemio Rivera Sandoval, 24, and Pedro Infante-Camarena.

The methamphetamine was located by a drug-sniffing dog after the vehicle was stopped because the driver, Carillo-Salas, was cruising at erratic speeds, tapping the brakes unnecessarily and holding up traffic, sheriff's officials said.

The drugs, if sold in individual doses, are worth an estimated $321,900, sheriff's officials said.

Detectives also seized $2,494 from Sandoval, officials said.

The trio was arrested and booked into the Lake County jail on suspicion of possession of a controlled substance for sale, transportation of a controlled substance, conspiracy to commit a crime and using a false compartment to conceal narcotics.