A Libby father and son are facing drug trafficking charges following a traffic stop on Christmas Eve 2024.

Calvin Paul St. Onge, 66, and Calvin Michael St. Onge, NEED AGE, each face one felony charge of criminal possession of drugs with the intent to distribute.

Calvin Michael St. Onge appeared in Lincoln County District Court Monday, March 10 and pleaded not guilty to the offense. His next court hearing is scheduled for April 13. He remains lodged in the county detention center on $100,000 bail.

Calvin Paul St. Onge has not appeared in court yet on his charge.

According to the affidavit of probable cause charging the offenses, in December 2024, state Department of Criminal Investigations Agent Cameron Pavlicek was working with a confidential informant in another county and learned they could buy methamphetamine from a man named “Paul” in Libby, Montana. He was later identified as Calvin Paul St. Onge. 

The informant said they have bought meth from Paul multiple times in the last decade. The informant also said Paul travels to Washington every two to three weeks to obtain a large amount of meth to bring to Montana.

Agent Pavlicek worked with county Det. Brandon Holzer and a warrant to track Paul’s location was obtained. The investigator saw Paul was traveling through Idaho and into Washington on Dec. 22, 2024. Paul remained in Tacoma before until Dec. 24 when he returned to Montana.

The truck both men were traveling in, Michael was driving and Paul was the passenger, was stopped by county deputies near Troy. Agent Pavlicek got a search warrant for the truck and two days later, investigators found two bags of meth that weighed 1.75 pounds.

According to Lincoln County Justice Court records dating to 2003, Calvin Paul St. Onge has been accused of more than one dozen offenses, including criminal endangerment, assault, driving without a license, assault with a weapon, violating a protection order and , fleeing from police.

Some cases were dismissed while others resulted in guilty pleas and transfer to district court.

Each man, if convicted, faces a maximum sentence of 20 years in the Montana State Prison.