Posted on: May 02, 2025 07:30 AM

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18th street gang member sentenced to 45 years in prison for racketeering conspiracy and two murders

Earlier today, at the federal courthouse in Brooklyn, Yanki Misael Cruz-Mateo, a member of the 18th Street gang, a transnational criminal organization, was sentenced by United States District Judge LaShann DeArcy Hall to 45 years’ imprisonment for racketeering conspiracy in connection with his participation in two murders: the October 25, 2017 murder of 20-year-old Jonathan Figueroa in Saugerties, New York, and the February 2, 2018 murder of 20-year-old Oscar Antonio Blanco-Hernandez in Queens.

John J. Durham, United States Attorney for the Eastern District of New York, and Christopher G. Raia, Assistant Director in Charge, Federal Bureau of Investigation, New York Field Office (FBI), announced the sentence.

“Cruz-Mateo committed two horrific murders and boasted about the carnage in video and text messages to instill fear, exact retribution, and promote gang violence,” stated United States Attorney Durham.  “The lengthy sentence imposed today delivers a powerful message that senseless violence carries serious consequences. My Office will continue our tireless efforts to investigate and prosecute violence carried out by the 18th Street and other transnational criminal organizations.  It is my sincere hope that the justice meted out today provides a measure of comfort and closure for the victims’ loved ones.”

Mr. Durham expressed his appreciation to the United States Attorney’s Office for the Northern District of New York, the Ulster County District Attorney’s Office, the Queens County District Attorney’s Office, the New York State Police, the Kingston Police Department, and the New York City Police Department for their assistance on the case.

“Yanki Misael Cruz-Mateo, an 18th Street gang member, lured two victims to their brutal murders as retribution for perceived disloyalty and affiliation with rival organizations,” stated FBI Assistant Director in Charge Raia.  “His actions mirror the gang’s depravity and its lawless prioritization of social status over human life.  May today’s sentencing offer a semblance of justice for the victims’ families and highlight the FBI’s continued determination to eradicate all brutal gang violence plaguing our communities.

Today’s sentence is the latest achievement in a series of prosecutions by this Office and our law enforcement partners of the leaders, members, and associates of 18th Street.  According to court filings and proceedings, 18th Street is a transnational criminal organization and violent street gang with members and associates residing throughout New York State, including Queens and Long Island, elsewhere throughout the United States, including Houston, Texas, and Central America. Members of 18th Street regularly engage in murder, attempted murder, assault, extortion, illegal drug and firearms trafficking, false identification document production, witness tampering, and money laundering.

October 25, 2017 Murder of Jonathan Figueroa

As set forth in court filings, including the government’s sentencing memorandum, in the late evening hours of October 24, 2017, Cruz-Mateo lured and travelled with Figueroa from Queens to Kingston, New York. Upon their arrival in Kingston, they were met by Israel Mediola Flores and other 18th Street members and associates who, into the early morning hours the following day, brought Figueroa to Turkey Point State Forest, brutally stabbed him to death and buried him in a makeshift grave.  Cruz-Mateo ordered the murder to be video-recorded and captured multiple 18th Street members and associates repeatedly stabbing Figueroa, slashing his throat and severing his ear.  In the video, Cruz-Mateo stated that Figueroa was being murdered for “being a rat.” Cruz-Mateo then sent the video to other 18th Street members as a warning.  Figueroa’s body was discovered in February 2018 by the FBI, along with state and local law enforcement authorities, in a five-foot deep grave in Turkey Point State Forest.  The victim had sustained more than 100 stab wounds.

Co-defendants Walter Fernando Alfaro Pineda, Israel Mediola Flores, and Jose Douglas Castellano pleaded guilty to Figueroa’s murder. Mediola Flores was sentenced to 425 months in prison; Pineda and Castellano are awaiting sentencing.

February 2, 2018 Murder of Oscar Antonio Blanco-Hernandez

On February 2, 2018, several gang members killed Blanco-Hernandez because they believed he was a member of the rival MS-13 gang.  Co-defendant Jose Chacon had met Blanco-Hernandez weeks earlier through their mutual employer, a New Jersey-based house painting company.  On the morning of the murder, co-defendant Carolina Cruz and Chacon picked up Blanco-Hernandez at his home in New Jersey under the guise of going to smoke marijuana as friends.  Cruz and Chacon drove Blanco-Hernandez to Queens where they met 18th Street gang members, including Cruz-Mateo and co-defendant Yoni Sierra, who entered the rear passenger seat of Cruz’s car on opposite sides, sandwiching Blanco-Hernandez between them.  Cruz drove Chacon, Cruz-Mateo, Sierra, and their victim about 1.6 miles away to a quiet residential neighborhood.  Cruz-Mateo, Sierra, and Blanco-Hernandez got out of the car and started walking eastbound, while Cruz and Chacon stayed behind with the car.  After walking for a few minutes, Cruz-Mateo drew a .380 caliber semiautomatic handgun and shot Blanco-Hernandez in the back of the head, killing him instantly. Blanco-Hernandez’s body was discovered on a residential street in the Jamaica Hills section of Queens.  He sustained three gunshot wounds: two gunshots to the torso and one to the head.

Sierra, Chacon, and Cruz also pleaded guilty to Blanco-Hernandez’s murder.  Chacon was sentenced to 269 months in prison; Sierra to 204 months in prison; and Cruz to 150 months in prison.

This case is part of an ongoing Organized Crime Drug Enforcement Task Forces (OCDETF) investigation led by the United States Attorney’s Office for the Eastern District of New York and the FBI.  The principal mission of the OCDETF program is to identify, disrupt, and dismantle the most serious drug trafficking, weapons trafficking, and money laundering organizations, and those primarily responsible for the nation’s illegal drug supply.  OCDETF uses a prosecutor-led, intelligence-driven, multi-agency approach that leverages the strengths of federal, state, and local law enforcement agencies against criminal networks.

From DOJ