Belton Man Sentenced for Drug Trafficking, Illegal Firearms

KANSAS CITY, Mo. - A Belton, Mo., man was sentenced in federal court today for leading a drug-trafficking conspiracy and for illegally possessing a firearm.

Serjio Diaz, 40, was sentenced by U.S. District Judge Greg Kays to 15 years in federal prison without parole.

On April 9, 2024, Diaz pleaded guilty to one count of conspiracy to distribute heroin, methamphetamine, and cocaine, one count of possessing heroin with the intent to distribute, one count of possessing a firearm in furtherance of a drug-trafficking crime, and one count of money laundering.

Diaz admitted that he was the primary organizer of a drug-trafficking conspiracy that lasted from Jan. 1, 2019, to June 22, 2021.

The investigation began on March 18, 2019, when federal agents interdicted and seized a package from California that contained more than 4.5 kilograms of methamphetamine, which was addressed to Diaz's residence. On the same day, federal agents also interdicted and seized a package from California that contained more than three kilograms of methamphetamine, which was addressed to the residence of his brother and co-defendant, Tony Diaz, 41, of Raymore, Mo.

During the course of the investigation, investigators conducted 23 controlled transactions from Serjio and Tony Diaz, utilizing an FBI confidential source. Over the course of these controlled purchases, law enforcement purchased more than seven kilograms of methamphetamine, more than six kilograms of heroin, and 468.6 grams of cocaine from Serjio and Tony Diaz for a total of $243,900.

In one transaction, for example, the confidential source purchased a kilogram of methamphetamine for $9,000 from Tony Diaz. In another instance, the confidential source purchased 222.4 grams (7.5 ounces) of cocaine from Serjio Diaz for $7,000.

On June 22, 2021, law enforcement officers arrested Serjio and Tony Diaz and searched Serjio Diaz's residences and vehicles. Officers found almost nine kilograms of heroin, 166 grams of cocaine, six bags of pills that contained fentanyl and weighed a total of 78 grams, a Glock 9mm semi-automatic pistol, and $82,250 in cash.

Officers searched Tony Diaz's residence and found 1,128 grams of suspected heroin, 28 grams of suspected cocaine, a Zastava Arms 7.62x39mm semi-automatic rifle, a Romarm Cugir 7.62x39mm semi-automatic rifle, and $5,461 in cash in Tony Diaz's bedroom. Officers also found a Remington Arms .22-caliber rifle in a shed, one pound of suspected marijuana in his Lincoln Navigator SUV, and a Ruger 9mm semi-automatic pistol and 3.4 grams of suspected marijuana in his BMW X5.

From May 1, 2019, to Dec. 31, 2020, Serjio Diaz deposited 93 money orders, totaling $82,145, into either his personal bank account or the bank account of his business, Imperial Window & Gutter Cleaning, LLC. Serjio Diaz went to multiple post offices on the same date to purchase money orders; 21 of those purchases occurred soon after a controlled drug purchase was made by law enforcement in this investigation. Serjio Diaz limited his purchase to a maximum of $2,000 at each post office in order to avoid federal reporting requirements.

Tony Diaz has pleaded guilty to one count of conspiracy to distribute heroin, methamphetamine, and cocaine, one count of possessing heroin with the intent to distribute, one count of possessing firearms in furtherance of a drug-trafficking crime, and one count of being a felon in possession of a firearm. A sentencing hearing has not yet been scheduled for Tony Diaz.

Co-defendant Maria Jasmin Lopez, 24, of Phoenix, Arizona, also pleaded guilty to her role in the drug-trafficking conspiracy and was sentenced on Aug. 1, 2023, to 10 years and three months in federal prison without parole.

This case is being prosecuted by Assistant U.S. Attorney Bradley K. Kavanaugh. It was investigated by the U.S. Postal Inspection Service, the FBI and the Jackson County Drug Task Force.

Organized Crime and Drug Enforcement Task Force

This case is part of an Organized Crime Drug Enforcement Task Forces (OCDETF) operation. OCDETF identifies, disrupts, and dismantles the highest-level criminal organizations that threaten the United States using a prosecutor-led, intelligence-driven, multi-agency approach. Additional information about the OCDETF Program can be found at https://www.justice.gov/OCDETF.