Defendant Sentenced to 45 Years in Prison in HSTF Prosecution Related to the Murder of Puerto Rico Police Sergeant Eliezer Ramos Vélez
SAN JUAN, Puerto Rico — The Drug Enforcement Administration’s Caribbean Division joins its Homeland Security Task Force (HSTF) partners in announcing the sentencing of Luis N. Isaac-Sánchez, also known as “Chimbo,” “CDobleta,” and “Dobleta,” to 45 years in federal prison for drug trafficking and firearm offenses related to his participation in the murder of Puerto Rico Police Sergeant Eliezer Ramos Vélez.
United States District Court Judge María Antongiorgi-Jordán imposed the sentence on October 29, 2026, followed by 10 years of supervised release. Isaac-Sánchez pleaded guilty on June 10, 2026. The FBI investigated the case, which was prosecuted by the United States Attorney’s Office for the District of Puerto Rico.
The sentencing reflects the shared commitment of DEA Caribbean Division and its HSTF partners to supporting accountability for violent criminal organizations and protecting communities throughout Puerto Rico.
Isaac-Sánchez admitted participating in a conspiracy to distribute heroin, cocaine, crack cocaine, marijuana, and other drugs in the Sabana Abajo, Luis Llorens Torres, Los Mirtos, Lagos de Blasina, La Esmeralda, El Coral, and Jardines de Monte Hatillo public housing developments and nearby areas. He also pleaded guilty to possessing a firearm in furtherance of drug trafficking.
Four additional defendants who pleaded guilty in June 2026 received the following prison sentences, each followed by 10 years of supervised release:
- Victor J. Pérez-Fernández, also known as “La Cone,” “Vitu,” “Vitikin,” and “Enano”: 45 years.
- Olvin O’Neill Concepción-Tapia, also known as “Sinfo”: 40 years.
- Daniel J. López-Vega, also known as “Dany”: 40 years.
- Andyel González-Sáez, also known as “Martino”: 28 years.
All five defendants admitted participating in the murder of Sergeant Ramos Vélez. Their plea agreements provided for application of the federal sentencing guideline for first-degree murder, whether they pleaded guilty to the drug trafficking conspiracy or the substantive firearms-related murder charge.
Assistant United States Attorney and Gang Section Chief Alberto López-Rocafort, Deputy Gang Section Chief Teresa Zapata-Valladares, and Assistant United States Attorneys Laura Díaz-González and Joseph Russell prosecuted the case.
This prosecution is part of the HSTF initiative established by Executive Order 14159. The initiative brings together federal, state, and local agencies to identify, investigate, and prosecute criminal organizations responsible for drug trafficking, violence, human trafficking, and related crimes.
As a member of HSTF San Juan, DEA Caribbean Division works alongside law enforcement and prosecutorial partners in Puerto Rico and the U.S. Virgin Islands to confront the connection between drug trafficking and violence. These partnerships bring together investigative resources, intelligence, and prosecutorial expertise to dismantle criminal organizations and strengthen public safety.