A Phoenix, Arizona resident and a Mexican national living illegally in Phoenix have been sentenced in federal court for their roles as leaders of a transnational drug trafficking organization. The announcement was made by First Assistant United States Attorney Troy Rivetti. The two men were among 35 individuals charged in January 2024 for their involvement in a large-scale narcotics and money laundering conspiracy that distributed fentanyl, methamphetamine, and cocaine across the United States.
United States District Judge J. Nicholas Ranjan sentenced Marcos Monarrez Jr., age 26, to life imprisonment followed by three years of supervised release. His father, Marcos Monarrez-Mendoza, age 55, received a sentence of 15 years in prison and will be deported to Mexico after serving his term.
According to information presented in court, from September to November 2022, Monarrez Jr. and his father led the Phoenix-based Monarrez Drug Trafficking Organization. Federal wiretaps intercepted Monarrez Jr. obtaining large quantities of drugs from a supplier connected to Mexican cartels. These drugs were then distributed through a network of traffickers nationwide, including western Pennsylvania. The investigation also found that both men laundered proceeds from drug sales by sending significant sums of cash back to Mexico.
“The sentencings of the father/son leaders of this transnational criminal organization today, in addition to the earlier sentencings of nearly two dozen of their co-defendants in the case, are reflective of the extremely serious nature of these charges and the magnitude of the destruction such groups inflict upon our communities,” said First Assistant United States Attorney Rivetti. “The Monarrez TCO introduced massive amounts of fentanyl, methamphetamine, and cocaine into neighborhoods throughout the country, using violence and money laundering to help carry out their drug trafficking. We remain resolute in standing with our law enforcement partners at all levels to investigate and dismantle such networks and protect our communities from these predators.”
FBI Pittsburgh Special Agent in Charge Kevin Rojek stated: “Today’s sentencings send a clear message: the FBI and our partners will not allow organized drug networks to crisscross this continent. The flow of these deadly poisons across the border ends right here in our communities where families and lives are destroyed. It fuels addiction, overdoses, and violence. Those who think they can peddle these drugs will be put away for a very long time.”
Special Agent in Charge Eric McLoughlin from Homeland Security Investigations Philadelphia added: “With Marcos Monarrez Jr. and his father, Marcos Monarrez-Mendoza, heading to federal prison, the dismantling of this father-and-son trafficking enterprise has proven that no one is beyond the reach of justice. By working in lockstep with the FBI, the U.S. Attorney’s Office for the Western District of Pennsylvania, and our state and local partners, HSI cut off a pipeline responsible for distributing millions of fentanyl pills, hundreds of pounds of methamphetamine, and multi-kilogram quantities of cocaine into communities here in western Pennsylvania and across the nation. Today’s sentencings demonstrate our unwavering commitment to protect the public and to hold transnational criminal networks fully accountable for the devastation they inflict.”
Monarrez Jr.’s sentencing also included charges from Michigan related to conspiracy involving fentanyl distribution between February 2019 and December 2021 as well as racketeering acts tied to bribery conspiracy, K2 distribution conspiracy, and money laundering. While detained at Cambria County Prison between July 2023 and December 2023 he used contraband cell phones to continue directing drug operations outside jail walls—including coordinating distribution efforts involving about half a million fentanyl pills nationwide.
So far 33 out of 35 defendants charged have pleaded guilty or been convicted; 25 have been sentenced while two await sentencing following convictions at trial.
Assistant United States Attorneys Arnold P. Bernard Jr. and Katherine C. Jordan prosecuted this case.
The investigation was conducted by multiple agencies including FBI’s Laurel Highlands Resident Agency; Homeland Security Investigations; Internal Revenue Service–Criminal Investigation; United States Postal Inspection Service; FBI Safe Streets Task Force; Cambria County District Attorney’s Office; Cambria County Prison; along with other local law enforcement bodies.
This prosecution falls under Operation Take Back America—a Department of Justice initiative aimed at eliminating cartels and transnational criminal organizations while addressing illegal immigration issues.

