Two men face federal charges after task force seizes 21 kilograms of fentanyl and over $380,000 from residence

Date: Nov. 21, 2025

Contact: newsroom@ci.irs.gov

ATLANTA - Rico Deville Buice and David Estevan Montillo Diaz have been arrested and charged by criminal complaints with conspiracy to possess with intent to distribute fentanyl. Buice and Diaz appeared in federal court on November 19, 2025, to face charges after law enforcement executed a search warrant on at a Forest Park rental home, where they discovered and seized 21 kilograms of fentanyl, $380,000 in suspected drug proceeds, and a firearm.

“These arrests and seizures demonstrate the live-saving impact the Homeland Security Task Force has in our community,” said U.S. Attorney Theodore S. Hertzberg. “The collaborative effort of different law enforcement agencies united in the fight to eliminate transnational criminal organizations kept a staggering amount of deadly fentanyl from hitting our streets. The resulting charges send a strong message: fentanyl traffickers in our district may run, but they cannot hide. Instead, they will find themselves in federal custody, and their drugs and money seized.”

“This operation is an example of the power of the Task Force in disrupting deadly drug trafficking operations,” said Paul Brown, Special Agent in Charge of FBI Atlanta. “The seizure of 21 kilograms of fentanyl and over $380,000 in drug proceeds is a direct hit to those who seek to poison our communities. The FBI, in partnership with our law enforcement colleagues, will relentlessly pursue these criminals and hold them accountable.”

“This seizure is a clear reminder of the devastation these criminal networks are willing to inflict on our communities for profit,” said Robert J. Murphy, Special Agent in Charge of the DEA Atlanta Division. “Working as part of the Homeland Security Task Force, our agents are committed to stopping these dangerous organizations before their poison ever reaches our streets. This result reflects the power of our partnerships and our shared resolve to protect families from lethal narcotics and the violence that comes with them.”

“It is with great honor that the Clayton County Police Department partnered with the Homeland Security Task Force (HSTF) during the execution of a search warrant in Forest Park, Georgia. Members of the Clayton County Police Department’s Narcotics Unit and CAGE Unit assisted in the operation,” said Clayton County Police Chief Kevin Roberts. “This significant seizure will undoubtedly save thousands of lives affected by this highly addictive opioid. The efforts of HSTF have made the streets of Clayton County safer by removing two suspected drug traffickers, disrupting a criminal network, and intercepting dangerous narcotics and illicit proceeds.”

According to U.S. Attorney Hertzberg, the charges, and information presented in court: On November 14, 2025, agents from the FBI Atlanta and DEA Atlanta field offices, along with officers from the Clayton County Police Department, executed a search warrant at a rental property in Forest Park, Georgia. As law enforcement approached the house, Rico Deville Buice ran out of a side door and attempted to flee. Agents quickly apprehended Buice and found approximately $4,000 in cash in his possession.

After David Estevan Montillo Diaz exited the residence, law enforcement discovered in the kitchen and a bedroom an estimated 21 kilograms of fentanyl, approximately $300,000 in rubber-banded stacks of cash, a money counter, a food sealer machine, and a Glock 19 pistol. Approximately $80,000 of additional cash was found in a designer bag allegedly belonging to Buice.

Rico Deville Buice, a/k/a Casino, of Atlanta, Georgia, and David Estevan Montillo Diaz of Coachella, California, are currently in custody.

Members of the public are reminded that the criminal complaints only contain charges. The defendants are presumed innocent of the charges, and it will be the government’s burden to prove the defendants’ guilt beyond a reasonable doubt at trial. The charges carry a maximum sentence of life imprisonment with a mandatory minimum sentence of 10 years.

This case is being investigated by the Federal Bureau of Investigation, the Drug Enforcement Administration, and the Clayton County Police Department.

Assistant U.S. Attorneys Thomas M. Forsyth, III and Calvin A. Leipold, III are prosecuting the case.

This case is part of Operation Take Back America a nationwide initiative that marshals the full resources of the Department of Justice to repel the invasion of illegal immigration, achieve the total elimination of cartels and transnational criminal organizations (TCOs), and protect our communities from the perpetrators of violent crime.

This prosecution is part of the Homeland Security Task Force (HSTF) initiative established by Executive Order 14159, Protecting the American People Against Invasion. The HSTF is a whole-of-government partnership dedicated to eliminating criminal cartels, foreign gangs, transnational criminal organizations, and human smuggling and trafficking rings operating in the United States and abroad. Through historic interagency collaboration, the HSTF directs the full might of United States law enforcement towards identifying, investigating, and prosecuting the full spectrum of crimes committed by these organizations, which have long fueled violence and instability within our borders. In performing this work, the HSTF places special emphasis on investigating and prosecuting those engaged in child trafficking or other crimes involving children. The HSTF further utilizes all available tools to prosecute and remove the most violent criminal aliens from the United States. HSTF Atlanta comprises agents and officers from FBI Atlanta Field Office, the DEA Atlanta Division, Homeland Security Investigations, ATF, CGIS, DEA, FBI, ICE-HSI, IRS-CI, DOL-OIG, DSS, USMS, USPIS, and USSS, with the prosecution being led by the United States Attorney’s Office for the Northern District of Georgia.

IRS Criminal Investigation (IRS-CI) is the law enforcement arm of the IRS, responsible for conducting financial crime investigations, including tax fraud, narcotics trafficking, money laundering, public corruption, healthcare fraud, identity theft and more. IRS-CI special agents are the only federal law enforcement agents with investigative jurisdiction over violations of the Internal Revenue Code, obtaining a 90% federal conviction rate. The agency has 19 field offices located across the U.S. and 14 attaché posts abroad.