Executive Summary
- A multi-agency operation involving the IFPD and federal partners resulted in three arrests on December 4, 2025.
- Authorities seized approximately 11.85 pounds of methamphetamine, 1.2 pounds of fentanyl, and six ounces of cocaine.
- Investigators recovered two firearms, including one stolen pistol, and nearly $7,000 in suspected drug proceeds.
- Suspects face various charges ranging from drug trafficking to unlawful possession of firearms and injury to a child.
IDAHO FALLS, Idaho — A coordinated multi-agency narcotics investigation has resulted in the arrest of three individuals and the seizure of significant quantities of methamphetamine, fentanyl, and cocaine in Idaho Falls. The operation, which concluded with a series of raids on December 4, 2025, involved collaboration between local law enforcement and federal agencies to target alleged drug trafficking activities in the region.
According to the Idaho Falls Police Department (IFPD), the investigation recovered a total of approximately 11.85 pounds of methamphetamine, 1.2 pounds of fentanyl, six ounces of cocaine, and one pound of marijuana. In addition to the narcotics, officers seized two firearms and $6,793 in cash suspected to be proceeds from criminal activity. The sweeps were conducted by the IFPD in partnership with the Teton County Sheriff’s Office, Bonneville County Sheriff’s Office, Idaho State Police, the U.S. Marshals Service, and Homeland Security Investigations.
Authorities reported that the first arrest occurred in the 200 block of Water Avenue. Investigators detained Juan Carlos Marquez-Nevarez and executed a search warrant at his residence. The search allegedly uncovered four pounds of methamphetamine, a stolen 9mm pistol, and $3,637 in cash. Marquez-Nevarez faces charges of Drug Trafficking in Methamphetamine and Possession of Stolen Property.
A second warrant was executed in the 1100 block of Mojave Street. Police detained Raphael Carranza during a traffic stop prior to the search, while Billi Carranza was located inside the residence. Officers reportedly discovered a .40 caliber handgun, $3,156 in cash, marijuana, and drug paraphernalia. Raphael Carranza, identified by police as a convicted felon prohibited from possessing firearms, was charged with Unlawful Possession of a Firearm, Possession of Drug Paraphernalia, and Possession of Marijuana. Billi Carranza was cited for Frequenting a Place Where Controlled Substances are Used and Misdemeanor Injury to a Child, among other charges.
The final phase of the operation led to the arrest of Griselda Resendiz. Investigators searching her residence and an associated storage unit reportedly found the bulk of the seized narcotics, including 7.85 pounds of methamphetamine, 1.2 pounds of fentanyl, and six ounces of cocaine. Resendiz was taken into custody on an existing federal warrant for the Delivery of a Controlled Substance and is expected to face additional state and federal charges.
Public Safety Impact
The seizure of over one pound of fentanyl represents a critical intervention in public safety, given the substance’s high potency and lethality potential in the community. The collaboration between local law enforcement and federal entities such as Homeland Security Investigations indicates a strategic focus on dismantling the supply chains of trafficking organizations rather than solely targeting street-level possession. By removing substantial quantities of methamphetamine and firearms from circulation, authorities aim to disrupt the operational capabilities of local distribution networks. It is important to note that all individuals named in this report are presumed innocent until proven guilty in a court of law.
