15-Year Prison Sentence for Deadly Drug Deal that Killed Two People
DEA tested “ketamine” found at the scene and confirmed it to be fentanyl, xylazine, and caffeine.
WASHINGTON – Jevaughn Mark, 33, of Washington D.C., was sentenced today in U.S. District Court to 180 months in federal prison for running a prolific drug delivery service in the metropolitan area and included the December 2023 sale of fentanyl he sold as “ketamine” that resulted in the deaths of two men, announced U.S. Attorney Jeanine Ferris Pirro.
Mark, aka “Ledo,” pleaded guilty March 14, 2025, before U.S. District Court Judge Tanya S. Chutkan to conspiracy to distribute 40 grams or more of fentanyl and 500 grams or more of cocaine, and to felon in possession of a firearm. As part of the plea agreement, Mark accepted responsibility for causing the deaths of Brandon Román and Robert Barletta. In addition to the prison sentence, Judge Chutkan ordered Mark to serve five years of supervised release.
“This defendant peddled poisonous drugs, marketed as ketamine but containing fentanyl, to unsuspecting people and, when challenged by multiple customers, he disregarded the alarms they sounded and continued to sell the same product,” said U.S. Attorney Pirro. “This blatant disregard for human life – in the name of profit – is unconscionable. This office is here to protect every member of our community. If you are a danger to the public and selling fentanyl, we will take every legal measure to neutralize the threat.”
“The drug market is characterized by the illegal availability of polydrug mixtures, many of which have lethal amounts of fentanyl. Criminals like Jevaughn Mark pose a deadly threat by selling drugs with fentanyl, which users unknowingly consume, often leading to their deaths,” commented DEA Special Agent in Charge Ibrar A. Mian. “Illegal drug distribution affects the very foundations of our families and communities, so every time we take criminals like Mark off the streets, lives are saved. I want to express my gratitude to the DEA teams, USAO-DC litigators, and our local and state partners for their hard work in investigating, arresting, and confiscating illegal drugs from this individual who was involved in violent activities.”
According to court documents, from at least January 2021, until the time of their arrests in March 2024, Mark along with his brother, Angelo, sold dangerous drugs throughout the metropolitan area – often hand delivering the narcotics himself – for at least three years. He developed a “menu” of drugs that he texted to his clients. On the menu, Mark listed “raw pure” cocaine and regular cocaine. Mark added “ketamine” to the menu in November 2023.
On Dec. 26, 2023, Mark sold 3.5 grams of “raw” cocaine and three grams of “ketamine” to Brandon Román. Recovered text messages indicate it was the first time Mark made a sale of “ketamine” to Román. However, the “ketamine” Mark sold to his client contained no actual ketamine; instead, it consisted of fentanyl, xylazine, and caffeine. Román and his friend, Robert Barletta, were found unresponsive the next day.
The DEA tested the leftover “ketamine” found at the scene and confirmed it to be fentanyl, xylazine, and caffeine. Investigators recovered text messages that led them directly to Mark. Between Jan 10, 2024, and Mar. 13, 2024, undercover officers from MPD and DEA made six controlled purchases of approximately 127 grams of fentanyl and 18 grams of cocaine. Each time the undercover officer asked to purchase ketamine. Each time Mark provided fentanyl.
After obtaining an indictment in March 2024, law enforcement executed a search warrant at Mark’s primary residence and recovered one unloaded handgun, one loaded handgun that was reported stolen out of Virginia, cocaine, fentanyl, other drugs, and $38,914 in cash.
This case was investigated by the DEA’s Washington Division and the Metropolitan Police Department. It is being prosecuted by Assistant U.S. Attorneys Iris McCranie and Dan Seidel of the Violent Crime and Narcotics Trafficking (VCNT) section.
