A La Pine couple suspected of smuggling fentanyl from Portland and dealing it throughout Deschutes County was arrested Thursday night in Crescent Lake, law enforcement officials said. 

A long-term investigation by the Central Oregon Drug Enforcement team and the U.S. Drug Enforcement Administration led local detectives and state police to pull over Mario Fivecoats, 35, and Rebecca Toepher, 31, in their Honda Civic around 10 p.m., Deschutes County Sheriff’s Office Sgt. Kent Vander Kamp said in a news release. 

During the stop, which happened on state Highway 58 at the Crescent Lake Junction, a drug dog, Bonnie, alerted law enforcement to substances inside the Honda, Vander Kamp said.

Detectives seized a commercial quantity of fake pills made with fentanyl and a package of methamphetamine, Vander Kamp said.

The couple’s 6-year-old son, who was in the car at the time of the traffic stop, was placed in the care of relatives after detectives contacted the Department of Human Services, Vander Kamp said. 

Vander Kamp emphasized the deadly nature of fentanyl in his news release, quoting Anne Milgram, administrator of the DEA. 

“From large metropolitan areas to rural America, no community is safe from this poison,” she said. “We must take every opportunity to spread the word to prevent fentanyl-related overdose death and poisonings from claiming scores of American lives every day.”

The couple has been charged in Klamath County Circuit Court, each with one count of delivery of methamphetamine and one count of manufacturing or delivery of a Schedule II controlled substance, according to court records. Fivecoats remains in Klamath County jail, according to jail records.