A 57-year-old Mesa County woman is being held on a $500,000 bond after investigators accused her of acting as a middlewoman in a wider meth, and cocaine trafficking network tied to western Colorado and nearby drug distribution routes.
Monica Miller faces charges linked to unlawful distribution and special offender allegations, while court documents describe coded calls, alleged suppliers, and routes reaching Denver, Phoenix, Las Vegas, California, and Mexico. The case now sits at the center of a broader trafficking investigation.
Investigators say Monica Miller was identified as an additional subordinate dealer connected to Melvin Hunsberger, who was arrested in February. A wiretap warrant for Hunsberger helped the Western Colorado Drug Task Force and CBI review calls between them.
In a December 2025 call, court documents say Miller and Hunsberger used coded words like “sodas,” “batteries,” and “a couple of those.” Investigators said that language can signal drug availability, customer requests, or coordination between dealers.
By Jan. 8, authorities believed Miller was selling drugs herself. After someone left her home, a Colorado State Patrol trooper stopped the vehicle and found methamphetamine, which investigators said supported their claim that she was distributing the product.
Miller was also allegedly linked to David Zermeno, a Hotchkiss man arrested in January after a Colorado State Patrol stop reportedly uncovered 10 pounds of methamphetamine and half a pound of cocaine. Investigators viewed that connection as significant.
According to the affidavit, Miller was believed to be the go-between connecting Hunsberger with an alleged Hotchkiss dealer, who then put them in contact with Zermeno. That role matters because middlemen often keep supply lines moving without handling every shipment directly.
Authorities also tied the broader network to Randy Martinez and Melissa Quintana, arrested in Grand County, Utah, in February. Recorded interactions pointed to narcotics coming from Denver, Phoenix, Las Vegas, California, and Mexico, showing a supply chain far beyond Mesa County.
Monica Miller was arrested Saturday on charges of unlawful distribution of a controlled substance involving meth and cocaine. She also faces special offender allegations tied to conspiracy and importation, which can raise the seriousness of a drug case in Colorado.
She is being held at the Mesa County Detention Facility on a $500,000 bond. Melvin Hunsberger, who investigators describe as connected to the same network, is also in custody on a separate $500,000 cash-only bond.
CBI agents contacted Miller in early March, but she declined to speak without a lawyer present. Court documents say she is due back Wednesday for a status conference, where the case will continue moving through Mesa County court.
The debate around cases like this is not only about one arrest, but how many supply lines can exist behind a local dealer. Another important detail is that court documents say Miller allegedly found another source, telling Hunsberger ‘their cookie is good.
What comes next will likely focus on whether prosecutors can prove Miller’s role across Mesa County. Her reported reaction to being called a small dealer, plus her refusal to speak without a lawyer, may become important as the case moves forward.