Bonnie, a drug detection dog with the Central Oregon Drug Enforcement team, photographed in January with a shipment of methamphetamine and fentanyl.

Seven people suspected of trafficking fentanyl in Bend were arrested in two separate busts in the past week, law enforcement said.

A weeks-long investigation into a house on NE Moonlight Drive near St. Charles Bend and Ensworth Elementary School ended in a drug trafficking bust March 12, according to a release from Kent Vander Kamp with the Central Oregon Drug Enforcement team.

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Days later, a woman suspected of fentanyl possession was arrested in a traffic stop on U.S. Highway 97 north of Terrebonne, Vander Kamp said in a separate release.

Neighbor complaints of constant, late-night traffic around the house on NE Moonlight Drive led authorities to surveil it for a month in a half, resulting in six Bend residents’ arrests.

Two were arrested in a parking lot near the corner of NE Windy Knolls Drive and NE Twin Knolls Drive where Cailen Ray Mount, 37, Chelsea Catherine Kelly, 27, were allegedly selling fentanyl around 4:30 p.m. March 12.

About an hour later, drug enforcement detectives arrested two more people — Robert Steven Sanger, 24, Shamika Christine Alfonso, 30 — in a traffic stop as they left the Moonlight Drive house. That same evening, law enforcement searched the house, where they found the homeowner Dana Lynn Fetcho, 31, and Waylon Cole Smith, 28, allegedly trying to conceal and remove drugs from the house.

Detectives found a “commercial quantity” of powdered fentanyl, a psychedelic drug called diethyltryptamine, known as DET — which Vander Kamp said Central Oregon law enforcement rarely see — crack cocaine and counterfeit pills containing fentanyl.

“It’s very dangerous to do what they’re doing,” Vander Kamp told The Bulletin.

Every little bit of fentanyl off the streets helps, he said.

Only Mount, who had prior heroin delivery and possession convictions in 2012 and 2016, faces charges of delivery and possession of a controlled substance for dealing a substantial amount of counterfeit fentanyl pills, court documents said. Mount and Alfonso, who hasn’t been charged in court, remained in jail as of Monday.

In a separate case, Nancy Lee Long, who had allegedly been transporting significant amounts of fentanyl from the Portland area and dealing it in Central Oregon, is facing fentanyl possession charges after law enforcement stopped her on U.S. Highway 97 on Friday. She was a passenger in a friend’s Chevrolet Colorado when drug detectives and Deschutes County Sheriff’s Office deputies stopped the car after watching her for about 10 days, Vander Kamp said.

A drug-detection dog named Bonnie indicated there were narcotics in the car. Authorities allegedly found a “substantial quantity” of powdered fentanyl in Long’s underwear. Long was still in jail Monday, according to jail records.