Ravalli County authorities used an undercover sting operation early Saturday morning to arrest three individuals in what is believed to be one of the biggest drug busts in county history.

Ravalli County Attorney Bill Fulbright said 47 year-old Marlen Revelo and 23 year-old Mason Gregory Skerbeck, of Port Angeles, Washington, along with 21 year-old Crystal Lee Griffin, of Stevensville were arrested and charged with numerous drug offenses.

"Acting on a confidential tip, drug detectives and patrol deputies intercepted a very large shipment of heroin and methamphetamine in Ravalli County," Fulbright said. "All three individuals have been charged with conspiracy to distribute both heroin and methamphetamine. The three have also been charged with conspiracy to commit similar crimes in Missoula County."

Fulbright said the street value of the drugs was approximately $225,000, one of the largest drug busts in county history.

Fulbright said two of the suspects are in jail on $100,000 bond, while the third bonded out, but was re-arrested a short time later.

"During the process of a random drug test, the defendant did not pass," he said.

The three were allegedly attempting to set up a drug distribution ring in western Montana, and were apprehended before the operation could be fully established.